Entering week 7 flower, ideal temps with lower wattage or high temps with higher wattage??

I'm wondering which I would be better off doing for the last 2 to 5 weeks of flower, happy environment for the plants with lower wattage or vise versa.

I'm currently running only 30w per square foot, ~950w to a 4x8, mixture of cmh and cobs. My temps have been staying around 82 give or take a few with that wattage. I've been trying to stay around 79 and have randomly increased and decreased wattage with the warmer and colder weather so that I can give them as many watts as possible while trying to keep an ideal temp, but here at week 7 bud size is lacking a bit.

I could increase to about 1230w and be at about 40w per sq. ft but temps will hit 92 to 94 ish. I could also adjust to anything in between there, where would you guys say would be the sweet spot or that you'd recommend?

Despite those high temps I have a shit ton of air movement, 6" intake inline blower over the canopy, 12" osc fan over canopy, 2 10" osc fans under the canopy and a 10" inline exhaust fan.
When it has hit 90, the plants really didn't show any stress at all, if anything they prayed harder, no taco'ing of the leaves but it would only be for a day or two.

Appreciate anyone's input.

Ideally your rh is high enough to help with the high temps.
I lower day temps to mid 70s thru the last 4 weeks.

TintEastwood said:

Ideally your rh is high enough to help with the high temps.
I lower day temps to mid 70s thru the last 4 weeks.

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Yeah my rh hangs around 55% so I'm thinking thats why I havent seen much stress from the environment. At the same time it worrys me about bud rot/PM, I do have a shit ton of air movement but I just dont know where that line is drawn from having enough air movement to get away with a higher rh. I could run 65% rh if I knew it was safe, maybe you could fill me in? I know it helps cuz I can keep my night temps up if I want to which would help against PM. I can control night temps from about 68 to 80 degrees.

So your advice would be crank the watts up a bit if I could keep the rh around 60%?

PM is always a worry at any rh! Ugh.
As long as your temps do not skyrocket you should be good.

Might want to look into VPD vapor pressure deficit it is a guide for what RH to have at different stages of growth and temperature. Here is a good write up about it http://www.just4growers.com/stream/temperature-humidity-and-c02/vapor-pressure-deficit-the-hidden-force-on-your-plants.aspx And here is a calculator https://www.dimluxlighting.com/knowledge/vapor-pressure-deficit-vpd-calculator/. Going to need a good infrared temperature gun to take ambient and leaf temperatures.

TintEastwood said:

Ideally your rh is high enough to help with the high temps.
I lower day temps to mid 70s thru the last 4 weeks.

Click to expand...

Is that with led or hps/mh?

1212ham said:

Is that with led or hps/mh?

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CMH. I also start dropping Co2 level during same weeks.
Day 33 from flip.