I'm actually thinking about getting enough drive space to just download all your stuff. Incase something happens to it, I'd always have a copy. I really can't stress how thankful we all are for the great information you have given us over the years.

Thank you for all the hard work you put into sharing your knowledge

Always happy when I get a notification ❤ thanks for all you do!

I'm in the market for a new light and this gets posted! Awesome.

Thanks once again Debacco for sharing your knowledge with us! This is definitely helping me out as im looking into lights for my 4-8ft tent right now!

All good stuff one thing I might add is I bought an earlier spider farmer and it's very hard to dim You need a very small screwdriver I would recommend any led you get has a dimmer Thanks for taking the time to do this video

Thanks professor!

thanx again professor

Back at it again with another great one!🙏👏🤝

Excellent content....wish I would have seen it a year ago lol...thanks for the info! I love your channel!

Ah yes.... lights... for years I didn't grow or start indoors, thank you common household lights that I have on anyways, you have saved me a literal fortune. Spectrum bla bla, put your plants near a window too, saves you time if you know what you're doing which isn't hard.

Great video! Just spent 4 hours surfing the mind boggling, overwhelming internet shopping for LED grow lights, resulting in frustration and indecisiveness, I gave up. Really want to see additional info from your upcoming videos!

I’ve got three years on spiderfarmer sf-4000. They work great. And they still produce close to as much as they did new. They have run continuous these last three years. As for the hvac switch I was already running hid lights so the change was great on my hvac from lower cooling temps from leds. Plus I was able to eliminate the ducting for hids

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LED lights do run cooler, but I still cool them the same way I did my HPS lights. Most growers use the common cool dry air coming in at the bottom of the tent and warm moist air out at the top. I push cool dry air in at the top past my lights and the warm moist air out on the other side. It goes in to an external tent that cools, takes the excess moisture out, and adds fresh air from the intake and then pushes that air back in to the tent with the plants. The CO2 from the fresh air falls down over the canopy as it goes past the lights. I figured this out by accident, I was trying to get the climate just right. I had budgeted to replace my lights every year and have not had to replace a single light and all of them have had a range of 10-15% reduction in par ratings. Everyone of my growmies say their lights are dead or putting out half par at the one year mark. This is just my experience, I could be super lucky but I believe it is because my lights run cooler.

When you say plant science is lagging behind the lighting technology, wouldn't the best lighting spectrum recipe just aim to replicate nature? BTW fantastic video's, new subscriber and love the content.

I like LED's. They don't produce much heat which is great

I always prefer LEDs my autoflower came out really good indoors with led

I own a bestVA 1000w led, what hight should I hang it? All my autos stayed small didn't grow quick enough

how about ePAR? is it beneficial to these crops? Bruce done an interesting take on it but I would like to see more on it for yields

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The spectrum @ 1min. shows a 300 TO 800 range of influence. My lights have controls to turn on/off below 400 and/or above 700, but the spectrum you have there is way broader - is that much spectrum available so far with the same flexibility? (in led) What advice for using 1, both, or neither outside the 400 - 700 range for seedlings, veg, and flowers. Intensity also? Great stuff, THX

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It’s all about costs for me. LEDs are cheap to run.period.

Your information is very good. One thing to consider slow down a bit especially when reading from a script. Thanks, good stuff!

i am trying to grow my own first time ever, so im very limited using rockwool to germinate its popped 3/5 seeds in 3 days or less, and used a liquid seaweed mix/water, and in my pots i have some soil from the veg patches :) and i put in miracle grow balls plant food got 10 nutrients in it so im hoping for some results and im looking at a LED light as well for around 60quid

If the Nameplate of an LED lamp says 1800 watts, are the LEDs actually using 1800 Watts? Or a lower %age…like 1800watts = 300 watt LED. On a 20 amp 120v circuit I should be able to use 5 lamps?.?

Short version: Is it important to calibrate a pH meter at 25c or not? Long version: I apologize for posting a question unrelated to the subject of this video. I have become a bit desperate as I can find no info on the subject of how to calibrate a pH meter in which they talk about temperature during calibration, and I thought a recent video, from a channel I trust, might be the way to get an answer. I must be misunderstanding something, because I do know that pH depends on temperature and my calibration fluids have an actual chart of the changes in pH at different tempuratures, so, to me, this seems like you must calibrate at the recommended temp of 25c, and yet, in dozens of "how to calibrate" videos, this is never mentioned. Can someone point me to a video that explains this? I guess if the answer is "yes, you must calibrate at 25c" it would make sense with my current understanding, but if the answer is "no, you can calibrate at any temperature", I would be confused as to how this is possible.