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You are correct. Extracting the bottom can be very beneficial with leds.

Not just heat, radiant heat. What does the leaves look like with 81F 50rh? Stretch out?

If you extra t the bottom youll extract more cold air than hot. Id raise the lights a bit aswell cause thats defo a factor in this. Keep temps up and light levels a bit lower til you see an improvement in plant posture, their supposed to stretch their leafs out when theyre happy. Start from...

To the best of my knowledge Bugbee found no morphological effects but didn't quite specify what was the factors he looked at. But lets get this straight: he is one researcher out of many. In general horticulture green response means more fibrous type growth of support like structure: it...

This is your problem. This is all things at the same time: light intensity, climate nutes. Let me ask you: do you ever get your plants to stretch out their leaves properly? Are you in veg or flower? You should try to raise the temps, until your leaves stretch out, you may need to raise rh...

Nice setup but your plants look really sad, not really transpiring and fairly over lit looking. Dont wanna throw shade, did you get them to perk up?

Does it really have to be one of these two? Neither of them is something to write home about imho. Youre better off waiting and budgeting a little more. A light that last 5 years is going to end up much cheaper in the end than a light that last you 2-3. Evo diodes seems to have an upper hand in...

The question is, do we like the morphological response to green? We are not trying to grow sticks, we are trying to grow juicy and fragrant buds. Does green really promote that? I suggest reading up on standard horticulture; green response. It doesnt make a good case for green.

730- 4th white column, but it wasnt mono added, long tail whites + 660. Maybe like a 90cri white. 640/660 : each one lands in one chlorophyll action spectrum a and b. You need both to complete the whole cycle of photosynthesis chemically. And if you look at most standard growlights theres a big...

Around 50% increase from 600 to 1200 ppfd. This is a clip from another study which both confirms and contrast those findings. The 2 peak condition gets a 46% increase in yield but starts from a much higher position, and generally yields more than other spectrums. Broad (extra far red from...

Yeah but 1000w in a 4x2 is also a loooot... If its white leds id suggest dialing down to 50000-60000 lux at least

Imo water cooling leds is for really high energy density leds like cobs. Also, if you lead the heat to outside the tent but still draw from the same air youll be drawing the heat back in again, in principle. Id look for a better extraction unit, and a bit less watts, depending on what leds youre...

Indeed! A lot of people fail on their first, you should definitely feel good about yourself. But a lot of taste and effect comes in what comes after, dry and cure.

What you can do as a grower is to lolipop a bit the lowers, limit bud growth downstairs, and budmaking resources will concentrate to the top. As conor says: theres an element of genetics aswell; this pruning of lowers will either get you bigger or denser or a bit of both tops, and you lose a lot...

Banana Purple Punch should be real good had some fantastic phenos crossing with that

Reading back on that reply, im not so clear. Drying full plant is desirable, it goes slower and dry trim preserves terps better. If you cant keep up with ideal conditions then dry may be a bit faster but less quality inducing. Sorry if unclear before

2 weeks is very depending. But if you dont dry trim, and keep the buds on branches or even on the full cut plant its about right. This would all the best practice if you can do so. Any hurrying of drying is a quality loser.

Emmerson effect is on the other side of things, 680+730nm but its not really about maturity, its about added photosynthesis. Lots of confusion in that since the 730 also seems to have some effect on maturity but thats another thing. All i can do is to share results. Uv being a ripening agent...

Youre right in that, but uv will make the plant mature faster. These are trichomes from 7, 7.5 weeks in our grow: The amber is already too much but this is fairly hardcore uv supplement going down to 365nm.

That is true, but 400nm, which ive used with success is not harmfull. Its on the border of the par region so still photosynthetic. It will help with final ripening and it greatly increases taste/smell. Uvb should only be added with care, and uvc does not belong anywhere near your grow; its...