you need to exhaust hot, oxygen filled air and replace with cooler, co2 rich air.

it's almost impossible to have too much light! can you loose some, probably. you want to aim for 5000 lumens per sq ft, minimum.

cooling is just as important as lighting. although cannabis does well with high temps. not 115 though! photosyntesis will start shutting down if the temp gets too high.



-shake