Potency of Cannabis Grown Under LED and HPS Lights
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2 жыл бұрынPotency of Cannabis Grown Under LED and HPS Lights
Professor DeBacco
Research Article
Jenkins, M. W., & Livesay, C. B. (2021). Photosynthetic Performance and Potency of Cannabis sativa L. Grown under LED and HPS Illumination. Agricultural Sciences, 12(03), 293.
www.scirp.org/html/9-3003167_...
The Great Debate…
HPS vs LED
However, most people do not consider this to be a debate, they feel it is LED lights or nothing.
Comparing All Lights in Study
HPS
ePapillion 1000 w Double Ended HPS
LED
Fluence Bioengineering (now Fluence by Osram) SPYDRxPLUS LED
BIOS (Icarus Gi2)
California Light Works (SolarSystem 1100)
Then There Were Two…
HPS
ePapillion 1000 w Double Ended HPS
LED
Fluence Bioengineering (now Fluence by Osram) SPYDRxPLUS LED
The first part of this study was to evaluate leading LED light manufacturers/models and identify which option provides the most uniform distribution of light at the leaf and canopy as this is an important factor to producing a consistent end product.
Fluence by Osram SPYRD xPLUS model clearly demonstrated optimal light distribution, photosynthetic response and also maintained leaf temperature within an optimal range to achieve maximum photosynthetic rates.
Lightings Impact on THCA Levels
In this study, all cannabis cultivars grown under LED lights yielded an increase in THCA% with an average increase of 5.39% (mean of 25.06% THCA under LED versus 19.67% under HPS)
What Does This Mean For Growers?
Many growers would think that LED lights will yield them more THCA and while this study did show there are other factors that must be taken into consideration.
With indoor facilities there are other environmental control factors that need to be optimized to ensure a quality harvest.
THCA and Lighting
To break the 30% or even 35% total THC theoretical barrier one does not need LED lighting as this can be done with HPS lights used during flowering.
LED lighting can also help this, but all factors must be taken into consideration especially coverage area related to PAR readings.
Grower Considerations
Sure LED light technology may be the way of the future, but at the current time taking into full cost of initially purchasing, ownership and number of fixture needed HPS is still price competitive.
LED lights do offer the advantage of being full spectrum so growers can see the plants “true” without the need for filtering lenses, and there may be some (beneficial) wavelengths of light that can aid in cannabis plants ability to produce certain compounds at greater concentrations.
But this does not mean HPS lights are useless and if available to growers they should use them.
Take Home Message
Many companies produce LED lights, but in general…
Good LED lights are not cheap, and cheap LED lights are not good.
HPS lights can still produce quality cannabis and for the cost are worth a serious consideration by more growers.
Link to Lecture Slides: docs.google.com/presentation/...
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Title
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The Great Debate
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What Does This Mean for Growers
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*Due to the description character limit the full work cited for "Potency of Cannabis Grown Under LED and HPS Lights" can be viewed at... docs.google.com/document/d/1a...
@lelenny3302 2 жыл бұрын
As long as you have full spectrum and a PAR meter to measure light, you should be good. High end LED lights like Luxx are very good. But as far as thc and terpine production, alot of factors come into place. But really if you do proper plant work, and have your nutrient and humidity levels in your medium balanced, you will get a quality harvest. But that does not end there. You can have a perfect grow and harvest with the highest quality outcome, but if you make a mistake during the drying AND curing process, you end up with less than desirable quality. I love your videos, Debacco! Keep them coming!
@DeBaccoUniversity 2 жыл бұрын
You bring up an interesting point, the video can at least try and provide some help with one part of the bigger puzzle you mention;-)
@WildBill496 2 жыл бұрын
I always liked HPS until I got an electric sky ES300 LED. My electric bill is much lower as well.
@drobro4396 2 жыл бұрын
@@WildBill496 Hows your yield?
@freshasadaisy4782 2 жыл бұрын
@@drobro4396 lower i guess
@muthrfuqrjonz3530 2 жыл бұрын
@@drobro4396 HLG LED. HLG 600R. These are top of the the line I guarantee you success.
@BarefootBill 9 ай бұрын
I've grown with hps for 40 yrs and will continue as i use the heat generated in wintertime to maintain temps. Have tried leds and spent plenty of money on them but they just dont satisfy my needs. I'd rather replace a bulb than an led fixture. Much cheaper, longer lasting and better quality herbs with hps for me and my indoor growing environment. And i didnt notice any energy savings when using leds.
@DeBaccoUniversity 8 ай бұрын
Many would agree with you.
@WaffenSSTotenkopf 16 күн бұрын
Seems like the thc in weed grown under the sun or HPS bulbs are more potent than the stuff grown under LED.
@leilani3304 2 жыл бұрын
You are the best man! I love watching every single one of your videos and you have made me 10 times the grower I was before your video.
@DeBaccoUniversity 2 жыл бұрын
Thanks for sharing that is great to hear!
@matthewstewartshaver8808 2 жыл бұрын
This was awesome! Thank you for providing peer reviewed articles.
@DeBaccoUniversity 2 жыл бұрын
It takes time to find, review, generate content and record/post, but great to know the time was worth it;-)
@ronplumb1332 2 жыл бұрын
@@DeBaccoUniversity It's definitely worth it. Thank you sir.
@tonywesley4789 2 жыл бұрын
Got so much advice education and help from professor My 4 plants are looks so good so far
@DeBaccoUniversity 2 жыл бұрын
Hope your plants continue to look good and glad to hear the information on this channel has been helpful!
@uncutbush 2 жыл бұрын
I found a happy medium with led and hps lighting together that the plants respond nicely to .seems after many harvest vests the combination of led and hps causes tighter bud node spacing and more dense buds from the blues coming from the led
@marcosjaramillo9892 2 жыл бұрын
Thats what im doing bro. I still love hps idc what people say lol. Specially for flower. I like using hps during winter cause i grow in my shed helps keep the heat up but yeah a mix of both works great.
@DeBaccoUniversity 2 жыл бұрын
HPS still have use can have proven effective as you have found out.
@ivanrojasmorales6034 2 жыл бұрын
Learn how to work with those leds. Make sure that your leaf temperature is 5° cooler than your room temp. Run them warm and run that co2 .
@dtw6485 2 жыл бұрын
Can't confirm this. But the place I bought my led told me a hps will cancel out the led light as it messes with the spectrum with the two combined.
@demsandlibsareswinecancer4667 2 жыл бұрын
@@dtw6485 Bro Science my friend
@SouthAfricanCannabisExtraction 2 жыл бұрын
Love that you base your presentations on scientific review! It would have been great it the published team pre-evaluated x3 HPS light manufactures as well (similar to LED). Have you done a video covering minimum PAR per m2 (scientific publication) to facilitate plant growth? Also interested on diminishing rate of return of say double PAR per m2.
@DeBaccoUniversity 2 жыл бұрын
There is not a specific video on what you are suggesting, but maybe this DeBacco University video will help you or others... kzfaq.info/get/bejne/q9NdZquLvazSk2g.html
@SouthAfricanCannabisExtraction 2 жыл бұрын
@@DeBaccoUniversity Really appreciate you making the effort to refer this video. Keep up your amazing channel work!
@cannabinoidisolate8679 2 жыл бұрын
Fantastic video recommended here.
@stevenking3286 Жыл бұрын
Always enjoy your informative content.
@DeBaccoUniversity Жыл бұрын
Glad to hear it thanks for sharing and watching.
@TriStateTrichomes 2 жыл бұрын
Everyone wants to take a side and the answer more often then not is... IT DEPENDS. Another great video.
@DeBaccoUniversity 2 жыл бұрын
Just trying to provide data so people can make informed decisions.
@hope4853 2 жыл бұрын
We appreciate it! 👍
@demsandlibsareswinecancer4667 2 жыл бұрын
Actually if you aren't getting better results from Led than hps, it's just a problem with you or the grower. Not the fixture. The depends that you're talking about actually should say depends on if the grower knows how to properly use LED fixtures because you can't just take the hid down and stick the LED up and walk away thinking your job is done and it will now go to plan.
@TriStateTrichomes 2 жыл бұрын
@@demsandlibsareswinecancer4667 well yes of course. But I'm generalizing as to why people think one over the other. Because most do not think of all the variables. They think of doing what they know works and that it works better with one light over the other without diving into why that is. Even large scale growers make this mistake. Not everyone who grows wants to know the "why" and "how" to everything and so that causes issues when things change because they are not understanding the impact that change has on other variables in the room and what needs to be changed to compensate for that change being made. So I agree with you but again I'm just give a general reason as to why. If everyone thought as you do then yhe growing space as a while would be more advanced. And I'm all for it.
@Cannaruba 2 жыл бұрын
@@TriStateTrichomes In terms of energy efficiency LED is objectively better, but if you have to cover a large area (greenhouse?) it gets expensive very quickly so it might still be interesting to consider HPS, especially if you "need" the heat anyway like in Canada. You also have secondary benefits like having seeing true color much more easily under LEDs which helps when steering your grow, finding pests etc.
@RATMAN42730 2 жыл бұрын
Always good to hear really anything you have to say.
@DeBaccoUniversity 2 жыл бұрын
It is nice to be heard;-)
@rumbeach375 2 жыл бұрын
Good presentation. 👍. For us nerds could of gone full lecture on the implications and spectrum analysis.
@DeBaccoUniversity 2 жыл бұрын
The goal is to present the main points and reference for those that want more;-)
@Greek5425 Жыл бұрын
I went out on a limb,and purchased an LED light for the purpose vegetative stage growth and I will never use H.ID.for vegetative growth again.However for generative stage I am staying with H.I D.Thank you for information on your channel,I appreciate it,as there is so much garbage useless information pertaining to cannabis cultivation.
@DeBaccoUniversity Жыл бұрын
Thanks for sharing and glad you found the channel and appreciate the quality information provided, be sure to share it with others!
@goodcitizen6193 2 жыл бұрын
Another excellent video. Thanks so much for sharing your knowledge. I feel cultivated! lol
@DeBaccoUniversity 2 жыл бұрын
Always happy to provide that cultivated feeling!
@Onoma314 2 жыл бұрын
I bought a couple of HLG 550's a year or so ago, pretty happy with them. I still use HPS too tho
@DeBaccoUniversity 2 жыл бұрын
Sounds like you might be getting the best of both.
@sadhu7191 2 жыл бұрын
Have to used led my scrawny arms can't lift hid
@amoshadad3657 2 жыл бұрын
@Debacco University Hey your videos are great Thank you !!! 3 questions: 1) How you determine the right leaf temp ? How they determined that in that study? (if LED create less heat so we might need to increase overall room temperature to maximize leaf temp for photosynthesis ? 2) what was the difference between the LED spectrum and the hps spectrum ? 3)This question, from different video you had, about nitrogen fertilizer. you said that in Canada, they had study that you can go as high as 200 l/b per acre, how you convert this for practical hydroponic quantity applications ?
@DeBaccoUniversity 2 жыл бұрын
Thanks for your interest answers provided below... 1.) This in part can depend on the VPD, but typically 80-75F is a good starting point. 2.) You would have to compare the spectrum provided by each manufacture 3.) This link to conversion factors should help... www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_022760.pdf
@amoshadad3657 2 жыл бұрын
Thank you so much for the answer!!! when you said in question 1)“ 75-80 degree”, do you refer to the leaf temperature or the room temp ? Thanks keep it up, very interesting chanel.
@lilman4806 2 жыл бұрын
Hes right i currently use leds with hps my thc and terpenes are up there no joke..i get strong cannabis..
@DeBaccoUniversity 2 жыл бұрын
Thanks for confirming the information presented with your own experience.
@lilman4806 2 жыл бұрын
@@DeBaccoUniversity Yeah!!!no problem your welcome i learned a lot feom watching you professor...
@pastrie42 2 жыл бұрын
Thank you for these videos!
@DeBaccoUniversity 2 жыл бұрын
Thanks for taking the time to comment and be sure to share the channel with others!
@NOT_SURE.. Жыл бұрын
i have a question , i am a novice grower i have ended up with 2 cupboards and 2 600w lights, i have been starting plants under one light then transferring to the other cupboard for flowering.. as i have 2 TS600s should i put the 2 together in one tent and just grow plants from start to finish under 2 600w, or is that overkill ?
@DeBaccoUniversity Жыл бұрын
All depends on the size of the cupboards. 600watt light is probably good for about 0.6meters x 1.25 meters or 2ft x 4ft.
@theAussie01 2 жыл бұрын
Thankyou 🙏 for this science based approach to this subject.
@DeBaccoUniversity 2 жыл бұрын
That is the goal of the channel!
@jimd1617 2 жыл бұрын
Thanks for everything you do 🤝
@DeBaccoUniversity 2 жыл бұрын
I appreciate your comment!
@Chefjjdecker 2 жыл бұрын
for newbs, run some cycles under the hps as a hedge to offset 10x cost of led. then add the costly Led to the mix and save electricity.
@DeBaccoUniversity 2 жыл бұрын
Great suggestion!
@demsandlibsareswinecancer4667 2 жыл бұрын
I disagree. The method of growing with LED is not the same as hps. It's more than just taking the old light down and putting the new light up. If they are new, they need to just start with whatever they're going to finish with. If you know how to do it it is actually much easier growing under LED than it is hps.
@cafedum9825 2 жыл бұрын
Can I ask Professor Debacco that if I let 3 plants (12-12) into flower phase from plant age 1 month / 2 month /3 month photoperiodic hemp. Are there any impact (quality) in cannabinol ( thc or cbd ) by every age of plant. Best regards.
@DeBaccoUniversity 2 жыл бұрын
As long as the plants are in good health the THC and CBD produce should be a fairly consistent percentage, however what will be different will be the total biomass which will have an impact on total yield.
@lelenny3302 2 жыл бұрын
I also can't stress enough that your enviorment is also KEY to success in a quality harvest. You need tio make sure you have good intake and out take airflow. You need to have something cooling down the enviorment and keeping it cool at that WITH proper humidity and co2 levels.
@DeBaccoUniversity 2 жыл бұрын
Many factors to consider, only one presented here.
@Icantkeepout Жыл бұрын
Should a new grower start with LED and should HPS users switch as they replace old lights?
@DeBaccoUniversity Жыл бұрын
What ever they can afford as both can produce quality yields.
@ronplumb1332 2 жыл бұрын
I use both, Hps in winter. Led during summer
@DeBaccoUniversity 2 жыл бұрын
Why the change based on season?
@drobro4396 2 жыл бұрын
@@DeBaccoUniversity I use hps in the winter. I use outside air to cool the grow. Id actually have to use a heater to use led in the winter. I use led in the summer as its more cost effective to cool an led room than an hos. I love both of them. I do think hps leaves more room for operator errors. This just works for me.
@gildedude333 2 жыл бұрын
Well done, well put, be well; and good job ^^ 👍✌️🤟
@DeBaccoUniversity 2 жыл бұрын
Thank you for this comment and glad you liked the video content.
@milonso650 2 жыл бұрын
i think this video should have gone more into the topic on who are these lights for. hobby indoor growers with a 1x1m growing space for exapmle: 400-600w hps would be needed for that space imo. now, if u want quality components you should get a dimmable psu, nice reflector with air ventilation (because without, temps will get out of control, if you havent got a air conditioner) and a good hps bulb. add that up and you will come out at around 200-350 dollars. for that kind of money would will get 300w lm301 fixtures. i would say, LED is the homegrowers choice and hps is good for big commercial grows. but still, wasting energy is always bad so lets transition to led.
@DeBaccoUniversity 2 жыл бұрын
HPS can still be used in small operations and should be at lest considered to determine if it is a potential good fit for an operation.
@milonso650 2 жыл бұрын
@@DeBaccoUniversity why exactly?
@DJTechnoboom 2 жыл бұрын
i still use my HPS 250 watt i got a OSRAM bulb for it use's less heat. it works pretty good but i guess i also have a 200 watt CLW COB light and i guess that 1 works a little bit better but i added a far red light to it so with out the far red light the HPS would be just as good as the COB i think but it use's so much energy damn, it use's more then 250 watts, so thats a bad thing and i only use it when it's winter time now also but i must say in a tent the HPS is pretty nice you just have to get a good distance from the plant so it doesn't stretch to much the HPS also works grate with my MIGRO UVB light, that add's over 3% THC anyways, and you can't buy that light in USA anymore also haha.
@DeBaccoUniversity 2 жыл бұрын
Overall 250 watt and under lights have a limited coverage area so be sure to consider how your set-up could be applied to a larger set-up. However, thanks for sharing and hope you continue to get good yields.
@DJTechnoboom 2 жыл бұрын
@@DeBaccoUniversity I forgot to mention I added 2 LED bar lights to reflect more light around the tent also so its about 273 watts overall
@lufoo3132 2 жыл бұрын
Should I turn my led light to the max for intensity ? While in veg and flower stage ?
@DeBaccoUniversity 2 жыл бұрын
Flower should have the greatest PAR, but max intensity may result in plant burning, as distance from plant to light needs to be taken into consideration.
@lufoo3132 2 жыл бұрын
@@DeBaccoUniversity thanks
@demsandlibsareswinecancer4667 2 жыл бұрын
When it is a Seedling or clone no more than 200 ppf. When you are in veg it should start at about 300 and finish around 500 to 600 ppf. Flower should start there and by the last few weeks you should be ramped up to maximum output and be hovering around 900 to 1,000 ppf. Unless your genetics and plants tell you otherwise with tacoing leaves or some other response that says too much light.
@dude9127 2 жыл бұрын
what says science about yield in terms of efficiency? I am used to know both technologies but when i compare yield from 600w hps to 600w led the case is more than clear in my opinion. of course there are higher investemt costs, but when i sum up future additional cashflows caused by additional yields by led i always recommend to go with led if circumstances allow to do.
@DeBaccoUniversity 2 жыл бұрын
Inputs and returns on investment is an important calculation for growers to make.
@demsandlibsareswinecancer4667 2 жыл бұрын
Correct. A decent grower can usually meet or exceed yield expectations using approximately 30 to 40% less power.
@giantplantofweed6061 2 жыл бұрын
I have a question reguarding light cycles... the common ones are 18:6 and 12:12 (for photoperiods).As far as I know one should not go above 20h of light cause that would cause the plants to become hermaphrodite. Now my question: what if I make the day longer than 24h? so what about a 24:6 light cycle for example? could the longer dark period even out the "to long" light period? I have found no awnser to that one anywhere. great viedeos, thenk you!
@DeBaccoUniversity 2 жыл бұрын
Think of it this way... plants can only determine the length of continuous darkness when it comes to photo-period. However, thinking in terms of a 24hr day would be advised.
@mystro8295 2 жыл бұрын
A guy on my facebook group runs 24 hour veg and claims to have done it many times without stressing the plant or herming it. I'm considering trying it next run
@giantplantofweed6061 2 жыл бұрын
@@mystro8295 if you do pls update here
@telnek 2 жыл бұрын
If I may, I grow very small plants because I pheno hunt most of the time. (16 plants per 4x4). I put my seedlings under 24h of light at a PAR of 250 and for 11 days from planting or 9 days from popped seeds (when they come out of the jiffy pucks). I flip to flower at 500 PAR to keep the same DLI for 2 weeks and then crank up PAR at 850-900 with increments of 100 PAR per week. They do very well and been doing it for many years that way. Cheers
@Underthreesuns 2 жыл бұрын
You can run 24hrs just fine. There’s a study from Arizona state (asu) that claims 20/4 provides optimum growth efficiency. Which is what I like to run now with great results. No matter which cycle or light setup you choose, the best advice I can give is to learn about DLI (daily light integral) and how that variable coordinates with your garden. It’ll bump your growing up another level.
@demsandlibsareswinecancer4667 2 жыл бұрын
Look. It was 5 years ago now or so that led overtook hps. It was when spyder fixtures were still under the company BML and they were still producing blurple Style full spectrum lights. They were the first true bar light that I ever saw and they ran those fixtures against three different brands of HPS fixture and bulb. It was done in a commercial grow facility and with all parameters equal except the lights. Afterwards everything was weighed and tested and the LED fixtures beat out all HPS fixtures across six different cultivars I believe it was coming out on top not just in weight but in terms of quality as well. By that time if you weren't having better success with LED just like now, it's a problem with you not the fixture. People didn't realize you couldn't just replace the HPS fixture with the LED fixture and everything would go to plan. There were many other adjustments needed especially environmentally.
@DeBaccoUniversity 2 жыл бұрын
This is why the original study is provided so you (and others) can look at the details. The video is to provide the highlights and also make growers aware of some scientific research that they may not otherwise have been aware of.
@todddecoteau2547 2 жыл бұрын
LED are better for overall use due to their ability to ride lower WATTS while producing less heat while getting closer to the plant with the same amount of labor... It's overall a better choice cost wise.
@DeBaccoUniversity 2 жыл бұрын
Just be aware of the total coverage area of the LED lights as sometimes more a required and growers must balance a more efficient fixture vs need more of them, what is the net benefit.
@todddecoteau2547 2 жыл бұрын
@@DeBaccoUniversity absolutely! The par from an LED may only cover a small area when closer to the canopy. Luxx lights make single bar 400watt full spectrum LEDs for this purpose. These specific lights are pricey though
@orca6930 Жыл бұрын
i love my leds but if it comes to quality i had the best with HPS+MH mix 2:1 or even 50:50.
@DeBaccoUniversity 11 ай бұрын
Spectrum and leaf temperature play a role in the final product.
@davidbryden7904 2 жыл бұрын
In winter, the additional heat of HPS can be desirable. In summer months, that same heat is a curse! Even w/vented hood, environmental demands lead me back to LEDs.
@DeBaccoUniversity 2 жыл бұрын
You are correct, in some areas (and times of year) excess heat can be a good thing.
@GimpSlayerGeneral 2 жыл бұрын
CMH in the mix would be nice?
@DeBaccoUniversity 2 жыл бұрын
You are correct, but this study did not include CMH's.
@Shadow33rg 2 жыл бұрын
Hey why my cannabis plant is so small 😭😭😭😭 and how to improve growing
@giantplantofweed6061 2 жыл бұрын
well that could have many causes. what medium do you grow in? how do you feed? what light? how much of it? other parameters?(temp,humidity) and what genetics do you grow?
@DeBaccoUniversity 2 жыл бұрын
More information needed.....
@archibaldmeatpants814 2 жыл бұрын
I've had great results with 1000W HPS, and even better with LED. Currently use 2 aglex 3000W LED's producing far larger buds. Plus my electric bill is half what it used to be. If you want even more potent THC, throw in reptile lights...the plant's response to increased UVB is increased THC potency 🙃
@DeBaccoUniversity 2 жыл бұрын
Thanks for sharing!
@mystro8295 2 жыл бұрын
I currently use a California light works UVB fixture. I’ve used it for one grow and I’m really liking what it’s done to the smell and stickiness of my flower.
@NOT_SURE.. Жыл бұрын
is that because those reptile lights are red so throw out a lot of the red spectrum during the flower stage ?
@mrmighty9862 8 ай бұрын
What is your source for the increase of THC under UVB?
@archibaldmeatpants814 8 ай бұрын
@@mrmighty9862 Ed Rosenthal's Marijuana Growers Handbook
@Casper14184 2 жыл бұрын
I know that the cost of led fixtures are high, specially when growers has to buy a few, the savings is on electricity,. Way less heat wich it means, the grower doesn't have to run big ac nor often. So a grower will save so much on electricity. Also, led fixtures run on less watts and produce the same or more intensity as hps. Leds you save, it pays it self at the end
@DeBaccoUniversity 2 жыл бұрын
Growers need to do some of this rough math and determine how long it will take to break even so they can make an informed selection.
@Casper14184 2 жыл бұрын
@@Priller007 it's not cap, cause it become more cost-effective. I'll give u an example; let's say u got a 10x10 room and u run 4 to 5 1k watts, each hps pulls 5 amps each,that's a total 25amps. Now u get leds, u can run either 400watts or 600 watts led in that room, and get the same or more light output and more coverage on each led fixture. Which the more light the more yields and. Also,, it's been proven that with leds the harvest time periods are shorter by 1 week or more that hps. That means u can add 1 extra grow in the yr. Also u can put 3 to 4 leds per each 1k hps the lights produce less heat, meaning u don't have to run the ac as much, out of hps u might get 2 to 3 good harvest before u have to buy new bulbs, the led chips/diodes last from 5yrs and better, so that's another area of saving. With digital ballast u have to get hps and mh bulbs for each fixture. That's how led are more cost-effective
@ronaldporras 2 жыл бұрын
Thank you
@DeBaccoUniversity 2 жыл бұрын
You are welcome!
@baymudatriangle9729 2 жыл бұрын
When factoring the cost i wish he would have factored in how long LED lights last (5-10yrs) compared to HPS lights (1yr)..
@DeBaccoUniversity 2 жыл бұрын
HPS ballast should be lasting more than 1 year, bulbs may be a different story.
@shardan8151 11 ай бұрын
Un anno la hps? ahahahah ahahahahah salutami le ventole delle luci a led che si rompono sempre 😉👋👋
@markcras8508 2 жыл бұрын
Potency comes down to genetics
@DeBaccoUniversity 2 жыл бұрын
and genetics can be maximized with the proper environment.
@demsandlibsareswinecancer4667 2 жыл бұрын
And with an improper environment, week lighting, a crappy nutrient regimen and s***** water, you can really F those genetics up can't you? Or you can have a proper environment, quality light with a full spectrum, and you can make sure your water is aerated and pH is spot on and drag every single last terpene and cannabinoid that is possible out of that genetic. Things are only so simple to stupid people. But will forgive you this time.
@TheOO23 Жыл бұрын
Led are cheaper if you consider electricity cost over 1 or 2 years. HPS usually require more power for heat dissipation. LED are also dimmable
@DeBaccoUniversity Жыл бұрын
Growers need to consider all costs of options both short and long term to make an educated decision for their operation.
@43audio89 10 ай бұрын
Thank you.
@DeBaccoUniversity 9 ай бұрын
You are welcome.
@michaelfilipek5595 2 жыл бұрын
I love your videos
@DeBaccoUniversity 2 жыл бұрын
Love your comment!
@Spiderdan-59 9 ай бұрын
We've all had some excellent crops with HPS but I think the end product grown under LEDs produce a better quality bud! 🌿🔥🇬🇧
@DeBaccoUniversity 9 ай бұрын
The debate continues.... ;-)
@Spiderdan-59 8 ай бұрын
@@DeBaccoUniversity I may end up hooking up my HPS at some point in time?? I will use again I think 🤔
@dopamine-87 2 жыл бұрын
I run both. Hps for my outdoor setup and led for the inside setup, both produce great results 👍
@DeBaccoUniversity 2 жыл бұрын
The goal is great results so it sounds like mission accomplished!
@johnschultz7633 Жыл бұрын
I don't know I think power consumption is a huge thing because remember we're growing every day over a long period of time forget the high HIDs
@DeBaccoUniversity Жыл бұрын
Many other considerations... kzfaq.info/get/bejne/a6mGbLudrcfNo2Q.html
@mohammedkaddouri2942 2 жыл бұрын
Good 👍
@DeBaccoUniversity 2 жыл бұрын
Thanks!
@prestontingley8914 Жыл бұрын
I feel due to higher thc, the terps may be lower.
@DeBaccoUniversity Жыл бұрын
The plant can only produce so much.
@phillipjacobs9147 2 жыл бұрын
What about Cmh? Color is the closest to sunlight you'll ever find and contains uvb...
@DeBaccoUniversity 2 жыл бұрын
CMH lights are great, but not part of this study.
@phillipjacobs9147 2 жыл бұрын
@@DeBaccoUniversity noted but it is a necessary subject in the future in my opinion. Cmh is a lot cheaper then led and early evidence suggests it's better yet its not hyped up like LED's that get promoted the whole time despite their high prices by people looking to make a buck... I'm moving over from HID to the new double ended 1000w cmh lights in my flower rooms later this year. Busy testing a 1000w cmh light and I'm very impressed, LED's don't offer uvb and the ones that do break quickly because the light destroys the fixture which puts the cmh at an advantage not to mention 1/3 the price....
@DeBaccoUniversity 2 жыл бұрын
Interesting concept and look forward to hearing your results. Not sure how to contact you but is possible it would be interesting to learn more.
@telnek 2 жыл бұрын
@@phillipjacobs9147 Indeed cmh are great. The only problem I encountered with them was heat control. They do heat up a lot, even with ventilated hoods. (great for cold winters for heating the house)! If you can keep your VPD dialed in, you have a Ferrari in your hands. I agree about LED cost vs double ended. I bought cheap 100W COBs X 9 for 4x4 three years ago and I like the versatility of canopy coverage and quality of the fruits!. Cheers!
@phillipjacobs9147 2 жыл бұрын
@@telnek problem with ventilated hoods is that the glass from the reflectors will block the uvb from hitting the plants. If you normally grow in rooms with AC and open DE fixtures and not tents with ventilated hoods the CMH produce pretty much the same amount of heat then the hps. Generally you need about 3500 BTU of ac for every 1000w fixture where it'll be around 2800 or so for a 720w LED so they don't use a lot less electricity like some people would like us to believe. I guess it comes down to what someone's goals are, if someone is a homegrower who just wants to grow enough for himself at a reasonable cost led or cob is definitely the way to go but if the goal is to produce boutique quality flower for market the CMH lights kick LED's ass in my opinion. Cheaper then led, better spectrum and the Uvb they give off is just magic. Happy growing man, it's awesome that people are starting to grow their own
@zebulonreynaud919 11 ай бұрын
19,36 to 25,6 is almost 25% increase of thc under led, it's really big.
@DeBaccoUniversity 11 ай бұрын
See 2:27... as it is only a 5.39% increase.
@zebulonreynaud919 11 ай бұрын
@@DeBaccoUniversity yes but the max thc is 35% so 35% is like 100% so a 5% thc increase above 20% thc is gigantic the difference between potency of weed at 20% thc and 30% thc is not 10%, it's 50%. a weed who is 30% thc is 50% stronger than a weed who is 20% thc. hps are dead, they are not efficient, and theyre spectrum can be reproduced with leds the only avantage hps had was infrared, now it's gone
@KeepinYouUp07 2 жыл бұрын
Blurple tech is by far the best.
@DeBaccoUniversity 2 жыл бұрын
This is overall spectrum limited and also reduces a growers ability to detect potential plant issues early.
@KeepinYouUp07 2 жыл бұрын
@@DeBaccoUniversity thanks for the reply! I was being sarcastic 🥴
@demsandlibsareswinecancer4667 2 жыл бұрын
I enjoy the results of full spectrum blurple but not blurple only.
@billyballsup2685 2 жыл бұрын
What about cmh. Lumatek 630 blow most lights out of the ball park.
@DeBaccoUniversity 2 жыл бұрын
CMH's are a worthy consideration, but were not utilized in this study.
@billyballsup2685 2 жыл бұрын
@@DeBaccoUniversity there's very few LEDs that can compete with a 630.
@telnek 2 жыл бұрын
@@billyballsup2685 You are on point, if you can manage the heat! Cheers
@billyballsup2685 2 жыл бұрын
@@telnek heat goes up 3or4 degree on whats in the room around the tent. Hps will go up 10to15 above the room temp. Then you get LEDs in winter you have to heat the room to get the temp up. They are really only good for a hot summer environment.
@dcon9708 2 жыл бұрын
HAF off led homegrown, have used hps. Led cost more, changing ginormous hps bulbs sucks. I prefer led bar lights with white light, uv, 630 and ir.
@DeBaccoUniversity 2 жыл бұрын
Good to know your options so you can make an informed decision.
@stevecrabtree7654 2 жыл бұрын
And then their was the electric bill!
@DeBaccoUniversity 2 жыл бұрын
Always seems to be on the rise;-)
@stevecrabtree7654 2 жыл бұрын
A grow operation on solar would be amazing
@STONEDay 2 жыл бұрын
High don't put my TP roll on a holder.
@springchickena1 2 жыл бұрын
they have one that holds vertically and shoots sheets up with air like tornado looks cool
@DeBaccoUniversity 2 жыл бұрын
Sounds like problem solved!
@kingcola3849 Жыл бұрын
Come on doc we all know that HPS lights are hotter use more energy they have to be changed every year just to name a few things LEDs are superior to HPS I used to grow with them but after trying LEDs my temps were cooler my light bill was smaller and my buds were spectacular it seems that the old guys just won't let the HPS go well I'm 50 and I got tired of my tip baking like an oven and my light bill being high as hell with no control over the Spectrum I want it's a no-brainer
@DeBaccoUniversity Жыл бұрын
There is something to be said for leaf temperature, and HPS is not dead, even in commercial applications.
@nallekarhu7994 4 ай бұрын
"good" led diodes are too expensive, cheaper ones burn out, I think led is a con still till better price for quality are available, I use cmh 315 veg 630 flower, it is the best spectrum, anything close to sunlight is the best.
@DeBaccoUniversity 4 ай бұрын
Many agree with you;-)
@johns818 6 ай бұрын
LED lights lack IR.. most of you don't know the significance of that because sponsored ads leave this out.
@DeBaccoUniversity 6 ай бұрын
This is in part what makes LED lights so efficient, no "wasted" energy to heat, but form a plant perspective the sun comes with IR (heat) energy in addition to the visible light spectrum.
@johns818 6 ай бұрын
@@DeBaccoUniversity I tired multiple grows with LED and I eventually had to run both humidifiers/dehumidifiers and AC to get the proper VPD, which actually negated the savings. LED grows also require more nutrients, like 30% -40% more vs HPS. The lack of leaf transpiration with LED's requires the grow room to be 4 to 5 degrees higher vs HPS, and Imo that is where LED loses potency. Don't get me wrong, LED grows look phenomenal and yields are definitely higher than HPS per/watt, but the smell, potency and smoke quality is nowhere close to HPS imo. Last thing, all of my LED grown bud never burned to white ash like HPS grown bud.. it was always burned to a black, greasy ash. My theory behind this is that LED's lack of IR does not allow the chlorophyll to degrade as rapidly as with HPS. I also think the insane amounts of Magnesium LED's plants need contributes to the black ash. Again, its just a theory and I am way to dumb to know for sure lol.
@musicisblood2636 2 жыл бұрын
First off... lol. Let's not say HPS, Let's say HID. Next, a garden done proper with HPS staggered side by side with hortilux true blue MH with full spec and UV. This set up crushes LED. Diodes are not better than chemistry when you aren't just using one bulb, but getting the full reds from the hps intermingled with the full spec and UV of the MH is fairly untouchable. Don't use the DE's, it's a 600 hps with a 400 MH, but they don't use the full spec MH with UV, AND they aren't vented, so your AC has to overcompensate and drives your bill up, I'm on the fence on rather or not Luxx knew this and pushed them just so they could compare the energy usage between HID and LED and make it look worse so they could sell more LED, as the profit per light is astronomical in comparison. Everything told you is an industry lie to sell you more bulls$%t, and everyone seems to have drank the coolaid. Led will probably get there someday, and when they do, it's gonna be them hyping the new orange red spectrum they just figured out how to create with diodes, that we've had access to via hps the entire flippin time, watch and see.
@DeBaccoUniversity 2 жыл бұрын
MH and HPS and CMH are all HID, the goal is to be specific in the comparison which is why the HPS term was used. Your comment also speaks in very general terms... which HPS light, which LED light? Details are provided in the study and should be provided in the comment as well.
@musicisblood2636 2 жыл бұрын
@@DeBaccoUniversity oh, sorry I thought I said Hortilux. Though, there are many good performing HPS bulbs, some arguably better. The main idea is that the BLUE Hortilux MH with full spec and UV (I believe it's the only one on the market that can claim that.) Staggered in a garden with the red eye hps gets you the bulk from the traditional hps, while also the powdery mildew resistance and other benefits of UV from the MH, along with being a very full spectrum bulb. My problem with a lot of studies like this is that they compare just a single hps bulb with an led, but thats not what a lot of experienced growers are running, rather a mix of the red and blue hid combined. In my over 15 years experience in a professional garden, this set up slays everything else. I'm not some hortilux fan boy or paid promo guy, just sharing my hands on experience.
@demsandlibsareswinecancer4667 2 жыл бұрын
First off just saying hid covers three different fixtures with three different Spectrum capabilities. Second If This Were True commercial Growers would not be switching from this combination as quickly as they can to led. If those are the results that you get, it just proves you don't know how to grow with LED. It's not an issue with the fixtures. It always blows my mind when an entire industry finally figure something out and then some Grandpa who's scared to step out of his comfort zone pretends that his old way is still the best.
@demsandlibsareswinecancer4667 2 жыл бұрын
@@musicisblood2636 I hope you don't use any hoods with glass because say goodbye to your UV if that's the case. And there are UVB bulbs and fixtures available some included with and some as extra fixtures. UVA is just glorified blue. So it's not something only available with hid bulbs.
@musicisblood2636 2 жыл бұрын
@@demsandlibsareswinecancer4667 Na. I actually have a UV tester, and plenty comes through glass. I'd heard the same thing so tested it myself proving it false, at least with my hoods. Also, real UV isn't just , "glorified" blue lol, it's actually noticeably damaging to the plant cells if it's too close. I have the UV indicator card from hortilux, and it reads low to moderate UV through the glass, even moderate is damaging if you get it too close, I keep it low.
@dano9411 2 жыл бұрын
Algorithm
@DeBaccoUniversity 2 жыл бұрын
Share, post and refer others to the channel to also help!
@ruebancastro3189 2 жыл бұрын
the toilet paper in the corner 😂
@DeBaccoUniversity 2 жыл бұрын
It is another issue that is often debated;-) Try to toss a little humor in addition to the education.
@ruebancastro3189 2 жыл бұрын
@@DeBaccoUniversity humor works for me Professor. Thank you for sharing your knowledge, you're healing the world. 🙏
@billyballsup2685 2 жыл бұрын
Them California lights are total rubbish. You need four to six of them to compete with a cmh 630 lumatek.
@GetitRick 2 жыл бұрын
🤔HLG blackbird 6504. 6quantum board panels LEDs in beast mode🤙
@GetitRick 2 жыл бұрын
(650 R)*
@GetitRick 2 жыл бұрын
Them lumatek make a boss CMH tho2 🤜👏👍
@DeBaccoUniversity 2 жыл бұрын
Thanks for providing growers another option to consider, do you know of any published scientific studies that used these lights?
@billyballsup2685 2 жыл бұрын
@@DeBaccoUniversity this guy is the man who is testing all the lights. kzfaq.info/get/bejne/hJ19pc2d362ddJs.html
@Mike-ts1kh 2 жыл бұрын
Pot today isnt as good as the good bud from the 90s crap taste
@DeBaccoUniversity 2 жыл бұрын
Sometimes memories are better than the actual event.
@Mike-ts1kh 2 жыл бұрын
@@DeBaccoUniversity well its a fact sungrown cannabis has more cannibinoids and unique terpenes long cures produce better weed and that was the norm in 1980s california many of todays growers suck same nutrients imdoor grows poorly flushed theres dozens of articles on how they ruined skunk. For example The skunks we had back then smelled a mile away and i scored the same weed from the same source 2 years ago and it still blew away anything in a shop skunk that sticks to the wall when u throw it
@Mike-ts1kh 2 жыл бұрын
@@DeBaccoUniversity plants are living things not machines
@GMT439 8 ай бұрын
HPS > LED
@DeBaccoUniversity 8 ай бұрын
There is some data to support your math.
@VersaiOnline 2 жыл бұрын
"At the suggested distance from bulb to canopy in the HPS versus LED comparison (6 inches for LEDs and 4 ft for HPS), carbon assimilation rates displayed a 142% percent increase in plants grown under LED vs. HPS with average photon flux densities of 795 and 298 µmol∙m−2∙s−1 for LED and HPS, respectively." What is "suggested distance"... they subjectively chose an arbitrary height that doomed the HPS from the start. I own two SpydrXPlus and love them but this is just bad science. Osram funded this or something. I would have compared the different spectrums at heights that had matching PPFD.
@DeBaccoUniversity 2 жыл бұрын
Many times scientific studies use "manufacture recommendations" which is what should be followed since the manufacturer should know their product the best. Sometimes to achieve the same light intensity with HPS the heat may result in leaf damage due to heat so this is why the manufacture suggestions are followed.
@VersaiOnline 2 жыл бұрын
@@DeBaccoUniversity That's a very sterile way of admitting that they twisted the manufacturer's recommendation out of context to get dramatic results. Height recommendations change per application. All this study shows is that Fluence chose to recommend a more intense hanging height than ePapillion. You could also get into why they chose to compare a 650w LED to a 1000w HPS. It's bizarre that they did that without finding a common point to compare them from (PPFD). The manufacturer recommendation for height is totally irrelevant in my opinion. We're interested in the performance on plants, not the performance of a companies marketing. The difference between 25% and 20% thc was due to the more than double amount of photons that the LED was allowed to give vs the HPS. You didn't address that at all in the results.
@tonym1279 2 жыл бұрын
Taught me nothing. Sorry but this was a waste of my time.
@DeBaccoUniversity 2 жыл бұрын
Many others feel differently, but maybe one of the other 1,000+ videos on the channel you will like.
@krazykillar4794 5 ай бұрын
Is it safe to say LED lights have taken over now in 2024 ? I just purchased a mars hydro fc3000 for £196 . 😊 I also have the spider farmer se 7000 . In the past I purchased a Dimlux DE light for over £500. Today nobody will pay £50 for it on ebay .😢
@DeBaccoUniversity 4 ай бұрын
HPS and CMH lights still have a place in the growing process.