T5's do get surprisingly warm. I have 16 T5's in my 8X4 flower room and temp has been a problem.Also at lowes there is a a little in line control box that you plug into the wall and then plug your fan or water ever into it and it has an adjustable temp sensor. So it only turns on when you raise above a preset temp. They are about $30
killerweed420 Reviewed by killerweed420 on . 110W T5 vs 150W HPS? although I am satisfied with my T5 setup, I would love to see the results if I switched it with a 150w HPS. Also, I would like to know if there is a difference in heat between my 110W T5 and the 150W HPS. Right now the exhaust is just leaving the box and staying in my closet, which is half open, and my intake is drawing cooler air from outside the closet. I have a 4" Vortex hooked up to a carbon scrubber, and as of now my cab stays ~5 degrees warmer than room temp. thanks in advance :) Rating: 5