How hot does it get without venting it?Try pulling air from another room theough the hoods and dumping it.See how hot it gets.85-90 is good for co2. Make sure and feed them though! They wil want to eat!My room gets up to 88 with two 600's on a 3x6 area.Completely sealed closet.I run a cap ppm 4...
No doubt 3k is going to be better.Like mentioned ,heat and electric cost need to play into your desition. I know people that run 3 600's instead of 2x1000's and they swear by it. 2x1000 on a 4x8 puts you at 62.5 watts per sq ft. Thats pretty optimal if you ask me. When you are running a large...