yah see kp when i have the lights off in my box the temps will fall to 60 degreez farenheight, possibly lower. so i need to have my lights on 24/7. im using all cfls, gor now i got two 26 watt cfls and a 13 watt cfl. imma go to wal mart and get four 43 watt daylight cfls then im gonna get a 75 watt hps.