Quote Originally Posted by bud luv
With no real air intake other than little (lightite) cracks here and there, you don't think C02 would be an issue?
Nope.

Any CFM or Carbon Filter size suggestions?
As big as you can afford. The bigger the better. Buy a big fan if you make a big filter.
Perp Reviewed by Perp on . Growing in a wet room? :jointsmile: A friend of mine is a few days from moving plants from his vegging area into his newly anointed flowering area, a free-standing "garage" where a bit of water acculuates on the floor when it rains. It's a 12 plant in 12 DIY 5 gallon bubble-bucket w/ drip rings and air pumps-type hydro setup. Local laws are such that he's allowed 12 plants, so he wants 12 big, high-yielding plants. He's got a 1000w Hortilux HPS and a 400W MH, with the intent or running both at the same time Rating: 5