I found as long as you got good circulation then you will be fine high heat is okay long as the humidity is low and you keep good air flow my last grow with both 600 watt hps on the temps always around 30C and still had good results yes they would of been better if the temps were lowering but still had a good yield
what kind of inline fan have you got in the room and where is that air coming from...?
on your cooltube is your fan pushing or pulling air ?
Are you ducting that hot air out of the room ?
the best way to test how close you can get your light is the old hand test its never done me wrong if its to hot for your hand its to hot for your plants find as you are in stretch mode now don't lower to much but find where that sweet spot in where its not to hot for your hand at put in 2" above that as the plants can grow 2" in a day
Hey bro, I have a 100mm ezi air centrifugal fan connected to a 100mm carbon filter, that ducts out of the growin are and where it draws air in.
I have a 150mm inline fan connected to the cool hood, which draws from outside of the tent, and then pushes through the cool hood and then is ducted out of the grow area.
What I plan in doing when I finish this grow is replace the centrifugal fan and filter with something like a 200mm fan and use it to also cool the hood.
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