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By week 5, cannabis has matured its ability to process light. That's been my experience but chatGPT says week 4. Cannabis is a light whore loves light. Day 34. Light values for the two plants.

Understood. I can sorta see the point of leaf tucking but removing healthy plant tissue? Not so much. I haven't been keen on "removing leaves to expose bud sites" but after recent "conversations" with chatGPT, I'm more inclined to go in that direction. I see the value in removing leaves that...

No. Those are beautiful looking plants and you don't have so many leaves that they're causing any issues. One of the primary functions of the vegetative state is to maximize the size of the canopy so that it can capture more light. The more light a plant can capture, the more it can use...

PAR = "photosynthetically active radiation" = the colors of light that we understand plants to use for photosynthesis PPF= photosynthetic photon flux = how many photons a light can generate as measure right at the light surface PPFD = photosynthetic photon flux density = how many photons are...

That's good info. It's highly doubtful that two PAR meters will both be inaccurate. If thermal protection is kicking in, I'd get that checked out pronto. Assuming that you're operating your lights in a standard operating environment, you should be able to run your lights at 100% nonstop...

I understand some of the impacts that it has but I haven't read up enough to feel comfortable saying anything other than go with the manufacturer's recommendation for that. Got it. I've no knowledge of how to manipulate the environment for a grow in progress to make it finish faster. You're in...

"extremely difficult" - yeh, PPFD changes a lot with just a small change in where the sensor is located. A change of 1" (vertically) can be 50µmol. I take multiple light readings ("samples") once the plant is > about 3 weeks. I use a grid pattern, like I've shown below. I've had a few times when...

I grow in a 2' x 4' and use a variety of lights during a grow (Vipar XS 1500, Mars SP3000, Growcraft X3 veg light, Growcraft X3 flower light + Spider GlowR80's). Lots of lights, yes, but each light has a specific purpose. Your tent measure 32" x 32" so a light for a 3' x 3' is the place to...

Gotta ask—have you checked your PAT meter? The reason I ask is the Kind doesn't make a light that generates that PPFD. The PPFD map for the X750 (found here) is shown below. I called Kind yesterday to confirm the PPFD readings. The new Xi750 will put out 1270µmol but the x750 maxes out at about...

Upstate New York in the winter. Snow piled high but warm inside. A friend of mine in the Army was from Watertown. Makes me cold just thinking of it. The propane heater is a twofer—heat and CO2 but, yeh, 2k PPM is too much. I didn't realize that it got that hot upstate. 85+CO2 is a good combo...

Fire this into your AI engine of choice - "does the cultivar "gorilla glue" have a tendency to have leaves that twist?" I ran that through Grok and got a detailed response.

I'll check out that grow. Thanks for the reference. If you're good with those results, that's the bottom line. A pound a plant from an auto is not unexpected but it requires high PPFD…or CO2. :-) I'd love to be able to run CO2 but the hardware I'd need to do that in a 2' x 4' tent just isn't...

Brave soul! I had to fight summer temps (my tent is in a garage in Southern California) but I had just one (big) res to deal with. Swapping six buckets every week? That's a lot of love for your plants, no doubt. A couple of thoughts re the setup—pH will naturally rise as nutrients are taken...

Just found the "angle training". Brilliant idea! The ultimate in KISS.

One concern re. air flow is to have enough air moving that the plants get an adequate supply of CO2. Second, is to not allow mold spores to land on the leaves. Conditions for bud rot are enough moisture on the surface of the leaves, RH >60%, moderate temps (<75° //24°C), and air flow that's...

Beautiful! Re. removing leaves — I'm a believer in "LTFA", by and large, but not to the point where foliage is so thick that the leaves are touching or that leaves are impeding air flow. The latter is hard to do but, when you have as much foliage as your grow, it's better to err on the side of...

LED light is highly directional vs sunlight which is highly diffused as it moves through the atmosphere and due to it bouncing off of objects. Some issue with topping—there's no need to do that because the surfaces of the plant will get an even amount of light.

Ah, coco coir. I didn't catch that. Coco is hydroponic because uses water to deliver the fertilizer and it's soil-less but I wouldn't call it DWC which is, loosely speaking, "roots in a bucket of water". With that in mind, I'd avoid using water at either extreme of the temperature scale...

The website scienceinhydroponics.com has a lot of good info but it can be frustrating to find some of the articles. Below are links to the pages that I've found most interesting: https://scienceinhydroponics.com/2009/02/faq-electrical-conductivity-ec-in-hydroponics.html...

Plants are looking good and the LST is going to help with canopy management. After an LST session, they look kinda beat up—I refer to it as "looking like a wet dog". Roots look a lot bigger, a good sign. There's a bit of "nute burn" in one leaf. Nutrient water? When cannabis goes through a...