yeah i was in a temp battle for awhile, then i just added a 6'' inline fan intake boost, brings in my house AC which is always 70 degrees.... It fixed things with my t5. when i add my 400 hps and 250 hps is a different story. I plan to exaust and air cool the 2 hoods through the attic thus not to effect my ambient grow room temp... so we will see here is my room now if ya guys care to look........... but royal if you can swing a couple of t5's they are working really well for me you can price them here T5 Fluorescent & HID Grow Lights for Plants from ACF Greenhouses