This will be my 3rd grow -- first two in soil in closet with flouro.
I'm upgrading to hydro -- dwc in rubbermaid containers w/airstones, etc. I bought a grow tent 4x4x6.5 and a 400hps light setup. I'm totally confused about ventilation. The tent is in an upstairs room, big old farmhouse. People on another forum told me I need 400cfm fan to pull air through. But, using the formula for finding cubic ft and divide by 5 -- I get like 21cfm. The guy at hydro store says 95cfm will be more than adequate (squirrel cage). The reflector has 6" aircooled ports on either side. I was thinking of using a passive intake and pulling air through the light and then exhausting through the top, but wouldn't that cause the tent to suck in? ugh, I had no idea what the tent involved, thought it was going to be easy! stupid me
I'm upgrading to hydro -- dwc in rubbermaid containers w/airstones, etc. I bought a grow tent 4x4x6.5 and a 400hps light setup. I'm totally confused about ventilation. The tent is in an upstairs room, big old farmhouse. People on another forum told me I need 400cfm fan to pull air through. But, using the formula for finding cubic ft and divide by 5 -- I get like 21cfm. The guy at hydro store says 95cfm will be more than adequate (squirrel cage). The reflector has 6" aircooled ports on either side. I was thinking of using a passive intake and pulling air through the light and then exhausting through the top, but wouldn't that cause the tent to suck in? ugh, I had no idea what the tent involved, thought it was going to be easy! stupid me
