The rule generally is to pull air through ducting.

This is how I and all the growers I know do it too.

MY ventilation ducting is simple flexible home dePOT duct with booster fans duct-taped to it, lol... looks a little halfassed but works fine. The intake has the fan IN the growroom sucking down a duct from elsewhere, and the exhaust has its duct booster fan at the outer end of the duct.

The fans and ducting are about $40 for each set- 8 feet of hose, a booster fan, and the electrical power cord to convert it (takes less than 5 minutes) to a plug-in rather than hard-wired fan.
stinkyattic Reviewed by stinkyattic on . Fan/Duct work question Okay so i think i have an idea for my intake and exhaust system. i am going to be using a cool tube fixture with 6" fittings and im wondering if i should put a fan on the intake side of the light to push air through or if i should put it on the exhaust side to pull the air out...or should i do both? im on a budget but i plan on getting a vortex fan either way. Any suggestions are greatly appreciated :thumbsup: Rating: 5