Quote Originally Posted by katacus
hey mate, nice box.

you need some air circulation. Id get a fan and poke some holes. Intake at the bottom, exhaust at the top on the opposite side. you should have a 1.0/1.5 exhuast/intake diameter ratio. passive intake/fan to exhaust. exhaust vent your hps directly. It will help exhaust some hps heat and bring in CO2 and might raise the humidity depending on where the cab is set up. may also need a solution for smell depending on your location. veg with about 60% or so. keep the air a little wet. remember thou, when ya flower, drop the humidity, turn fan down. dont want to rot the buds.

Good Luck and Happy Trails!



hope that helps.

Yeah ya son :thumbsup: I gotta get a drill/saw from my friend.

I got 2, 120mm comp. fans for exhausts. I gotta cut the holes (4" diameter) once i get these 1st grow test plant ones flowered and cut. Im using 2, 90 4" degree PVC elbows for the exhausts.

Hooking up the fan to them so they are lightproof (hence the bend) then slip both the PVC pipes into the wholes. Intake idk if im gonna put a fan there, cause the exhaust creates a suction w/ the intake. Idk if im going to make a cool tube for the HPS but we'll see