Keep in mind that the temps will drop a little when you actually introduce the plants into the room with fresh cold water. You can also try putting the ballast/s outside of the grow box because they generate a lot of heat as well. Up to 3-5 degrees even. If you still cant get below say.... 90 Degrees. Try introducing Co2 into the enviornment. Good ventillation and Co2 will help overcome and offset high temps.

Happy Growing....
disoBAYish Reviewed by disoBAYish on . Issue with Room new room in garage ,all insulated, rocked, poly on wall and lid. two 1000,hortolux. 1 max fan,with a can 75 filter ducted sweet, with hard and soft. the room is a twelve by ten, grow area is 6 x 11 feet ( two 4x4 flood and drain tables).i only have one lite running and a 10,000 btu free standing ac unit and i cant hold a 75 degree temp.no way with two lites. should i not recerculate the air or direct vent the fan out side? im new to indoor grow any input is appreciated Rating: 5