How to increase yield and quality with Dr Bruce Bugbee

Рет қаралды 166,317

Күн бұрын

Dr Bruce Bugbee shares the latest research on how to push your plants for more growth and higher quality. We discuss the following topics:
-How to push plants with much higher light intensity than ever before.
-Why elevated CO2 is so important at high light intensities and how to implement it.
-What is the best grow light spectrum.
-How to use far red to maximise growth at different stages.
-Steering plant quality with temperature.
-Intra canopy lighting.
-The dangers of using UVC.
The Science and Technology of Medical Cannabis Cultivation
2023/2024 Edition: caas.usu.edu/labs/cpl/cannabi...
We review the DLI 600 by Apogee Instruments: www.apogeeinstruments.com/dli...
& the Insight M100 spectroradiometer: www.apogeeinstruments.com/ms-...
Paper on principals of Nutrient and water management: www.researchgate.net/publicat...
Apogee Instruments KZfaq channel: / @apogeeinstrumentsinc
Shop MIGRO ARAY (global shipping): migrolight.com/collections/aray
Our Amazon US store (Free US shipping): www.amazon.com/stores/MIGROLI...
Bulk orders: Contact us at info@migrolight.com for a quotation
Follow us:
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Timecodes:
0:00 - Introduction
2:30 - Measuring DLI with the DLI 600 by Apogee Instruments
6:47 - How far can growers increase DLI
17:15 - CO2 required for high light intensity
19.29 - Nutrient and watering at high light intensity
20:10 - Limits of DLI for home growers
24:10 - DLI for seedlings and Veg
26:55 - Measuring Grow light spectrum with the Apogee Insight Spectroradiometer
28:59 - PPFD, ePPFD, YPFD & TPFD
34:00 - Far Red, phytochrome, shade response
43:35 - How to use variable spectrum grow lights
46:06 - What is the best grow light spectrum
49:03 - Benefits of using UVC
51:19 - Intra-canopy lighting
56:00 - Adjusting temperature to improve harvest quality
59:30 - Triploids

Пікірлер: 380

@sarkawtmeran6990 4 ай бұрын

Big respect to both you on behalf of everyone on here who watches your great videos

@MIGROLIGHT 4 ай бұрын

thank you very much

@tedn3030 4 ай бұрын

I hate it when a great product is too expensive for me.:)@@MIGROLIGHT

@honeyballleckda1699 3 ай бұрын

Well said my friend

@user-eg5cg5sg9y 4 ай бұрын

This guy has raised my game big time! Mad respect..

@FabianRadu 4 ай бұрын

same here

@MrMCKlebeband 4 ай бұрын

yup, cleared up many myths and made me understand some fundamentals truely.

@MIGROLIGHT 4 ай бұрын

Great to hear, makes it worthwhile, thanks for the feedback and best of luck

@jansondennis2438 3 ай бұрын

big ups it's all you mate you wanted to learn more and you seeking it out

@Tony-op6xf 4 ай бұрын

“So anyway we started blasting them” 😂😂

@jimd1617 4 ай бұрын

@25:13 LMAOOO

@fritzschnitzmueller3768 2 ай бұрын

this guy is a legend

@chriscastleberry6584 4 ай бұрын

Bruce bugbee is the man With the knowledge of The plant.

@anguilla1670 4 ай бұрын

Thank you Shane and Dr Bugbee.

@ZinfandelRed1914 4 ай бұрын

2 guys I've spent hours listening to. Great questions for the Doc, well done!

@jimmo85 4 ай бұрын

This was such a great watch. Will be coming back to this one numerous times, no doubt. Cheers chaps 👍🏻

@HappyDays_420 4 ай бұрын

Great Video, I always love listening to Dr. Bugbee. 🔥🔥

@epicaffect6375 Ай бұрын

I feel Dr. Bugbee is going to change my game too.

@eddevoe2519 Ай бұрын

I just aquired one of your PAR meters and it makes it soooo much easier to adjust light intensity and height above the crops. It eliminates the math errors w lesser meters that must be converted. Thank you Doc, one of if not my most important tools.

@growandshow4209 4 ай бұрын

Thanks dr. Bruce Bugbee, you are needed in this life 🙏 Great work 👌 and thanks Shane 💯👏🏻

@airesjd 4 ай бұрын

I have learned so much, in the last few years from both of you. I greatly appreciate any/all information you release. Thank you!

@frostymcnuggets2259 4 ай бұрын

Thanks so much for this and all of the other info that you put out into the community! Dr. Bugbee is always great.

@stevenlee2202 4 ай бұрын

Awesome. Been looking forward to seeing what Bruce has learned. I'm going to buy a light just because you got him to talk.

@stevenlee2202 4 ай бұрын

In a 2x2 or 3x3 space, it is not about economics always. Its entertainment. Second comment is. Why don't you hook a dimmer up to a C02 meter and select a preset over canopy height based on approx DLI levels relative to current C02 supply? Then it can self adjust to be even more economical for the other half.

@indiva7106 4 ай бұрын

Thankyou both for taking the time to make this happen been wanting to watch this for weeks!!! Thanks again GROWMIES

@keithgustafson7786 4 ай бұрын

So wait to give red +far red till done stretching then I can put them asleep and wake plants up with red +far red during flower I think I reading this right.😮?!

@indiva7106 4 ай бұрын

@@keithgustafson7786 ya u can I mean I use reds in veg now I do crypto chrome signaling for sunrise and then run Emerson for the rest of the day staying below 10%overrall ppfd of 660nm so plants don't bleach...been doing end of day reds for years now even run it in veg too

@michaelkohl396 4 ай бұрын

I really like your enthusiasm, great to watch your presentation of those stunning plants 👍☺️

@camz1039 4 ай бұрын

Thank you so much for this Shane. I have been excitedly waiting for this.

@KickYouInTheThroat 4 ай бұрын

Thanks for this episode. Always good to see Master Bugbee. 24:10 This section is nuts. I always start my seedlings low then move them, and they get that odd blistering/discoloration look on the leaves. I guess I should just let the things pop under full power. Think I might test that today. I might be overthinking this one. 51:19 This section on lighting under/in the canopy is pretty good. As a scrogger who sometimes deals with tight node spacing, I use the mylar side of old grow tent fabric to cover the tops of milk crates I use as platforms acting to essentially raise the shiny floor of my tent to be just under my scrog's canopy. Really brightens it up a bit and wont cost you much. The crates keep the circulation adequate. You could probably use something even better but I had the crates. It will also confuse the hell out of any aphids should you be so unlucky. Hope everyone is looking forward to spring. Good luck to everyone especially you outdoor folks.

@andrewstephens8790 4 ай бұрын

same on the seedling light sensitivity... perhaps seedlings were never innately sensitive to light, but merely adapted to the low light conditions they were started under, and then moved to a very different intensity.

@KickYouInTheThroat 4 ай бұрын

@@andrewstephens8790 I was talking it over in a group today and this seems to check out. At any rate, i have 35 bag seeds in just to see how it goes. might have to ditch the lit seedling dome for a xs1500 pro or something like that.

@heatherward553 4 ай бұрын

Nice trick imma have tell this pretty damn guud grower i kno that trick n c how it works😉

@dustincorkill-bomgaars5938 4 ай бұрын

I think allot of this info only applies to hydroponics. As someone that starts in supersoil and runs in living soil I have found time and again that anything over 800 in veg causes leaf stress (turning) possibly because of the overall water uptake. With seedlings I don't reduce the light intensity as much as increase distance, bringing the light closer every couple days essentially going from 300 to 700 over a 2 week period. Seems to work well. 👍

@NOT_SURE.. 4 ай бұрын

ive lined my grow room with that foil heat deflector stuff you put behind radiators , super reflective for the light

@christopherpollard7244 4 ай бұрын

Two great minds come together!! I’m locked in on this one!

@carlospenalva8121 2 ай бұрын

This man is a treasure!!! I need to do his course on the university

@humanmcperson272 2 ай бұрын

I WONDER IF HE COULD MAKE A ONLINE CONDENCED VERSION

@fadedmass1662 4 ай бұрын

I'm sold on intra canopy lighting after running it recently. The overall quality went up, and so did the yield. The upper canopy was getting 700-900ppfd of a red leaning light with far red. The under canopy was getting up to 200ppfd of a blue leaning light. The lights under the canopy stayed on the full 12 hours a day from day 21F onward.

@dertythegrower 4 ай бұрын

Proven by medicropper about ten years ago, buddy... literally here on video many years ago 😅

@concreter6832 4 ай бұрын

Where the under canopy lights uvir bars thanks.

@fadedmass1662 4 ай бұрын

@concreter6832 no there not, i used the Mars Hydro VG80 bars under the canopy at pot hieght. They are a visibly blue light but full spectrum. Above the canopy I use mars hydro TSL2000'S. Which are visibly orange with plenty of red and far red.

@toddatkinson5830 4 ай бұрын

I really enjoy your interviews with Dr Bruce, I've been growing for 10 yrs or so and learned most of what I know by making mistakes from bro science, now my grows are are solid but I still watch your vids to keep up with new science THANK YOU for what you do

@randyboy50 4 ай бұрын

Don't completely discount bro science and learning from your mistakes. My most favorite bro science guy was from my hometown in Brantford Canada. He was a deaf/speech teacher named Alexander Graham Bell who invented the telephone. There are some New Yorkers who claim he got the idea from an Italian immigrant who had a working phone in his home and was visited by Bell but it's never been fully proven. Bro science is great especially when people like Dr. Bruce share the real science so we have knowledge to work with. I created a huge pest infestation a little bit by accident in my outdoor grow shed with my first crack at RWDC and it was a ton of fun learning all the different and even experimental ways to kill them.

@christoffer6527 4 ай бұрын

I always had issues with nutrient deficiency. After listening to a podcast with bruce where he said he pushes EC to 6+ during first 3 weeks of flower with elevated Co2. I pushed EC to 3 for first 3 weeks and there is almost no deficiencies. Bruce is a hero

@jdavidblais 4 ай бұрын

hi, as a biggener i have nutriment deficyency with my plant but i dont speak very well in enlgish, what EC mean ?

@christoffer6527 4 ай бұрын

@@jdavidblais Electrical Conductivity. It is a way to meassure how much nutrient is in the water

@zackscott8636 4 ай бұрын

@@christoffer6527is this only used for hydro grows?

@diezelvh4133 9 күн бұрын

@@jdavidblaisadjust ph to 6.2-6.6.

@WhatAboutZoidberg 4 ай бұрын

The idea that we can speed up veg state is incredible, def want to read more about that.

@jansondennis2438 2 ай бұрын

same here mate 👍

@user-eg8hb8xt3j 4 ай бұрын

I love listening to this guy .

@steveod1 4 ай бұрын

Outstanding lecture, one of the most informative I've seen in a long time. Respect.

@cwallcw 4 ай бұрын

Not a lecture. It was a commercial couched in bookends of not new information. Disappointed

@DubStepAnonymouse 4 ай бұрын

I love it when Dr Bruce spills the beans and this round was an absolute food fight. 🥰 Thanks Shane, Thanks Dr Bruce, your work is very much appreciated.

@andrewmiddleton1762 4 ай бұрын

What marvelous knowledge of plant growth and light

@carlwebbiii6731 4 ай бұрын

I was just thinking about you today when i was thinking about what id love to do in life! And then i hop on here and immediately see you and a new video! Love it! Thanks for all your info and work! 👊🏻🤘🏻

@patbergeron4248 4 ай бұрын

Great show guys got a whole lot of info there I definitely have to come rewatch this on to get it more to sink in

@Dius765RS 4 ай бұрын

Bugbee, The Bruce... Legend

@gqjeffy 4 ай бұрын

My apogee 610 is constantly monitoring in my tent! Good shit!!!

@timturk1899 4 ай бұрын

Humboldt Seed Company are working with Triploids, Shane. I'm not sure if they're publicly available, but I've seen video of the plants, and they explain how they do the work. Very interesting work they're doing!👍💯✌️

@CocoDerasta-cb1xk 4 ай бұрын

They are just a smaller pack of 3

@MR-puffnstuff 3 ай бұрын

I have them they are not new once you top them the extra branch disappears. It is a mutation and I personally would steer clear of them.

@UbiquitousRomp 4 ай бұрын

I produce my Co2 with an Fzone fish tank generator for 100 bucks. I fill it with industrial grade Citric acid powder and bicarb, used by cleaning companies. 10kg of each cost me 65 bucks and last me about 15 weeks. in my 4x4 in a 10 x 7 lung room. at 900 - 1000 ppm. I do have to reload it every couple of days. As I found doubling the quantity didn't double the time I got from it. so reduced to 200g of each. Controlled by the IAQ Monitor Controller with solenoid and lights out cut off function. 140 bucks. I have to set my dehumidifier in the lung room at 10% below the desired tent RH in order to get the balance..

@MIGROLIGHT 4 ай бұрын

Thanks for sharing

@dertythegrower 4 ай бұрын

Works but does not last long... most use co2 scuba size tanks, which do not last even a week, buddy... i got paid to pickup co2 tanks before in Denver every weekz heh... many tank refills. a mushroom tent is more efficient and you get product... buildAsoil jeremy proves this (that channel and this one is the top no nonsense for homegrowers to get correct information without the salesman biases)

@Maya-Elijah-Simmie-Kam_Dad_ 4 ай бұрын

@@dertythegroweryou started 16 years ago but no grow videos? Why are you commenting with no evidence to talk? Everyone grows differently play boi

@jrok96 Ай бұрын

Youch! Why so offended . I took it that he was just mentioning about how expensive co2 can be.

@UbiquitousRomp Ай бұрын

@@dertythegrower AS This got bumped, I'll add some more details. The point I was making in my OP, was that 2 tubes purchased from amazon arrive by post and last me 15 weeks in my sized tent and lung room for 65 bucks. No going out to fill tanks. As it is now filled in house every few days.. It's worked for me for 4 years. And as I have tweaked the airflow, I have got it Running in a wave of 1100 - 1300ppm in late veg and flower. I run it at 600- 800 in early veg. Adding 3M silicone door tape to all four sides. gave me the seal to run at 1200, and still be economical. Cost was important, As I need to run dehumidifier in flower. But the bunus, is that it bushes the air to the area I want it to, which increases the efficacy of my Co2 circulation. I'm a home grower, so not suggesting this is good for fully automated run. As I do Go in the tent at lights on, to give it a natal boosts. And to tend to the plants and water. Which can raise it up to as much as 2000ppm which takes a couple of hours to drift back top my trigger point of 1100. But it works for me. And I'm actually quite proud of the way it works for the price. One more thing...I recently discovered that the internet recopy of 300 g of citric and the same of bicarb, into 450ml of water, is wrong. the correct formulae is 230g of anhydrous citric acid and 300 bicarb into 500ml of water. Good news as the citric is the more expensive of the two.

@dustincorkill-bomgaars5938 4 ай бұрын

In soil with only organic inputs I've found that anything over 800 in veg causes leaves to turn, and actually stresses the plants. Good info in general, but also important to keep in mind they are referencing very specific grow methods.

@kunad3294 4 ай бұрын

This is fantastic information. Thank You

@jimd1617 4 ай бұрын

top tier content as usual 🤝 thank you so much

@stevenrogers8001 4 ай бұрын

Great episode. Oregon CBD has triploid cannabis breeding dialed in. They released their 1st triploids in 2021 I believe.. Now they have released triploids for Type 1 cannabis as well. They hired an experienced PhD to do the work.

@leonjohnson1370 4 ай бұрын

A light scientist without sun spots just wouldn't be as believable!!!!!!! God bless 🙏

@WeedNerd.VooDoo 4 ай бұрын

Nascent Iodine takes care of those sun spots Doc.

@lachlanwilliamson2811 4 ай бұрын

Fantastic! content, thanks Guys.

@V00dooCookie 4 ай бұрын

Amazing video thanks for sharing.

@mircosferrazza4340 4 ай бұрын

Thank you so much i learn so much here.

@kalikushmush6018 4 ай бұрын

Great show , great info

@Nebuchadnezzar357 4 ай бұрын

A Master at Work

@HyperactiveHighs 4 ай бұрын

Love talks like this thank you both for the amazing information!

@funkytransport 3 ай бұрын

enjoying the deep dive

@dusty4208 4 ай бұрын

The Master Dr. Bruce Bugbee. Always fantastic and interesting content.

@camthecannaman 4 ай бұрын

I love Bruce he is such a kind human being with amazing amounts of knowledge and understanding. I dont think people realize how important and necessary these DLI sensors will be. As the world increases in temperature, the ability to grow gardens in backyards and random locations with limited amouts of sun will become more accessible; these sensors would be able to lyk how many people are able to grow their own food in their locations. Even people who live in apartment buildings who use windows to grow during certain parts of the year will also know how much extra supplemental lighting to give to their plants, food and herbs!

@davidshelley6598 4 ай бұрын

On this topic, where myths and pseudo-science from armchair experts abound, it's always a privilage to listen to reliable, evidence based scientific fact. Your channel and of couse Bruce, always deliver. Thanks!

@toddwilson1174 4 ай бұрын

Movin' on up! Nice work bro!!

@dertythegrower 4 ай бұрын

A lot of people are not talking about VPD (perfecting temp and humidity per cultivar) enough, but are focusing on uvc and UVB and ppfd/dli.. when those are not as crucial as the VPD chart numbers.

@dertythegrower 4 ай бұрын

56:00 🎯👌

@jasusx 4 ай бұрын

Vpd is important

@heatherward553 4 ай бұрын

Push it to the limits

@timbaker266 4 ай бұрын

Like hey man

@growersmindset 4 ай бұрын

yea my best grows are fall to winter in Arizona. starting them when its still warm and then finishing during december or january is the best grow season for me (indoor). inside the house it gets to the low 60's for flower which is great for the anthrocyanin production.

@sebastiankulesza3782 2 ай бұрын

GREAT CONTENT!!!🙏🙌

@2Goiz_1ShanDA 4 ай бұрын

Thats dr bruce from the light/soil video way back!🤙 man that was a great video

@th1789 4 ай бұрын

Amazing video !

@brucearderne7315 4 ай бұрын

Thx so much,,,would like to hear the prof on feeding(npk,,ppm)

@Ledgrowlightsdepot 4 ай бұрын

Always a great conversation!

@weednerd_dwc 4 ай бұрын

awesome interview thx to both of you \m/ \m/

@James-xn6fo 4 ай бұрын

I like it a lot. Watch all buys really good quality, and the doctor is going change the way I grow guaranteed

@wademacdonald106 4 ай бұрын

Great information 👍🏾

@psylocyn 4 ай бұрын

Great interview!

@Maedness. 4 ай бұрын

loving the content!

@Dickzilla 4 ай бұрын

The original Doctor Green Thumb.. Great content 👌

@JohnSmith-sq4pz 4 ай бұрын

You guys are Angels...doing the lords work there brothers! Thank you gentlemen! Great as always

@heavyvoodoo 4 ай бұрын

Thank you

@stevesapp9987 Ай бұрын

Great show.

@levelingup8589 4 ай бұрын

thanks as always

@geoforgan280 4 ай бұрын

What an amazing mind. Great vid!

@MIGROLIGHT 4 ай бұрын

Thanks!

@ChadAF_YT 2 ай бұрын

Two men whose experience and opinions I trust and respect!

@ninjackson1 4 ай бұрын

Outstanding!

@GordonsFrimens 4 ай бұрын

Thank you for great info and video. So basically I can use light mover on plants and it will be enough light ? Thank you.

@dfurry100 4 ай бұрын

Some advocate for a 6C/10F temp swing between day and night during flower. Is 17C/63F night and a C23/F73 day a reasonable shift or are we better off opting for a smaller shift, perhaps a 2C/4F shift like 18C/64F night and 20C/68F day for example? Dr. Bugbee's emphasis on temp is an eye opener!

@Letgetittv2 19 күн бұрын

So basically start to lower the temperature at the end of the flower stage. Mimic the late September and October temperatures in the end.

@reecemccullough4829 4 ай бұрын

Thanks for the video. Wish i was in the US to study under Prof Bugbee. Also happy to hear the health look is short term. Kind regards.

@dertythegrower 4 ай бұрын

True. It is not that easy, even if you are here with much experience... the education requirement is pretty expensive and a longer degree study than most growers will ever get or be able to afford at his college(or most colleges)

@reecemccullough4829 4 ай бұрын

@@dertythegrower yeah I didn't really think about the reality of the situation, was more a compliment 😜

@JohnG-sq5cn 4 ай бұрын

You probably can. His course from Utah State University is online. Registration opens sometime this month (March) for the fall class. cost $1495.

@Easy-my9gk 4 ай бұрын

Shane bringing the goods!

@SocialDeviant_ 3 ай бұрын

I bought P.E. thrasher spore syringe and knocked up some grain yesterday, along with making up some liquid culture with it. Im using monotubs, have some hygrometer and thermometers consistently monitoring. Ive done a lot of research but its definitely more information than i thought it would be. Very fun, and i figure if i can get any of these going then maybe il be downhill from here! This is my very first time btw so fingers crossed ❤

@Jason_g_kennedy 4 ай бұрын

I found mycrobal rock dust and frass to be so good i never check anything but leaf health ever since i started it. And DJ Shorts 11 on 13 off on flower cycle does show different phenotype expressions.

@jamessones4044 4 ай бұрын

--START WARM AND COOL OFF-- That explains why my best crop (16oz one 600w hps) was achieved in the coldest months and that I blasted the room with freezing temps.

@swayzecrazy420 2 ай бұрын

Yup, that’s what I do. I don’t use a dome. I use high intensity light right away for my seedlings but I keep the humidity in about 50% and the temperature is about 26 and they’re loving it.

@suki4410 4 ай бұрын

There are many growers, who panic about burning the seedling with too much light, that they keep them much too dark in the first three weeks. Then they have leggy seedlings, which need to get help for stability.

@spetrus9664 3 ай бұрын

thanks!

@jeromefourie8023 4 ай бұрын

Love u guys

@user-em4sm9vo2v 4 ай бұрын

I use a 2liter bottle with turbo yeast and 2cups sugar for co2 and I change it out every 3-5days. Leaving 3bottles hanging in my grow tent. I could definitely see the plants absorbing the extra co2 because after I didn't add the bottles to the room. You could see scar marks on the plant leaf with a cell phone microscope.

@johnconnor1583 3 ай бұрын

I want to do the same for my grow. Did it have any impact on smell or taste. People say this mixture stinks.

@humanmcperson272 2 ай бұрын

THANKS APPOGEE THANKS SO MUCH BRUCE

@markbristow3663 4 ай бұрын

Great show again, thanks Shane and Dr Bugbee! If an autoflower is under 24/0 lighting but still receives a DLI of 60, will the lesser intensity needed have any effect on quality?

@chilliing 4 ай бұрын

Keep her LIT🔥

@rchunt6786 4 ай бұрын

Great info! Shane could you please spec bar lights: 1) Phillips greenpower toplighting linear 2.2 2)Fluence VYPR 3p 3) ThinkGrow model-I plus All with dimmers. I appreciate all your efforts bringing technical knowledge to the bro-science knuckle heads. PEOPLES

@skepticalgenious 2 ай бұрын

Wow a DLI of 100 on a controlled cannabis plant. That's so bright. I can't imagine the lights for that test. Very impressive and great content. 1200ppm co2 at 4000 micromoles per square inch per second, For 12 hours.

@moderndiogenes 4 ай бұрын

What the industry needs is a chart like a phase chart. including feed concentrations, dli, co2 and most importantly temperature(plant vs atmos). there balance and relationship is obviously of utmost importance and i would dream of being a golden ratio for any plant due to finding a plants optimum dli and therefor optimum co2 and feed rates. As my machinist father taught me, it always comes down to speeds n feeds.

@Capirocobr 3 ай бұрын

Respect 🙏🏽

@laurieedeburn2449 4 ай бұрын

thanks

@user-ig7gx8ii6w 4 ай бұрын

Dr Bruce recommends 60% humidity for flowering too? And when should you start lowering your temperature? From the very beginning of flowering?

@j-nifty6664 4 ай бұрын

Bugbee is the GOAT!

@sevadak5896 4 ай бұрын

So what light or how are you getting 2300 ppfd at the top of the canopy without lgiht bleaching or burn? What spectrum

@ssm445 Ай бұрын

Would love to hear what Bruce says about light cycles of Automatics (people do 18/, 20/4, 24/0 from seed to crop)

@meghrichedzW Ай бұрын

Très intéressante vidéo merci messieurs Stay Safe

@christianmuller6317 16 күн бұрын

I use little mirrors to put more light from underneath the buds... In my opinion it works good..

@BlumenwaldX 3 ай бұрын

thx! i learned a lot and still got so many questions. is there a gentic or strain which is the most effective concerning photosynthetical datas? what about outdoor green fingerprint; input/output? what might be the role of cannabis in a green transformation?

@ChrisB... 4 ай бұрын

Should I supplement if the ambient CO2 level in my lung room is between 800 and 1200ppm? I still don't know why it's so high in there, but I monitor it constantly and that's where it is, the rest of my house is ~400ppm. Amazing video, I'll be watching more than once.