Quote Originally Posted by BLaQLiGhT
Hey 4x5, its nice to see everything is still going well with your grow man. With the 150 hps that u are using, do u have a fan pointing at it to keep the temps down or is it not producing a lot of heat. How are you keeping your heat low? temps in cab?
that HPS puts out slightly more heat than a MV bulb, havent had troubles with heat, I disasembled the ballasts and put them outside the room, that took care of my temp problems, I have a 12" exhaust (low speed) in the ceiling, 2 80mm 12v PC fans and an inline air "pump" for intake to the room, only 2 clip fans for movement to the plants and another 80mm fan mounted in the hood. My room sits 3-5 degrees higher than the room next to it (no a/c btw) temps average btw 70-85 only hit 90 a few times.