oh i see, i'm planning on growing 2-3 plants under a 250w blue spec cfl and a 250w red spec cfl in a reflector, hoping to yield an ounce. I'm planning on putting a oscillating fan in to the cupboard so that'll probs cause the smell of the buds to escape the cupboard, hopefully the ona block will eliminate the smell.
How long could i leave it outside of the cupboard? I'm hoping on using it during the drying and curing process since that smells the place up a lot.
You're gonna need some kind of exhaust, fresh air coming in, and stale air removed. Axial fans or PC fans should work for a small area like that.
One of my cabs has a 65 CFM PC fan removing air at the top of the cab, and there is a passive vent at the bottom of the cab. My temps are a
constant 77F/25C. The other cab, I have 9 plants vegging with an LED, I have a 6" duct fan removing the air in that one, and a passive duct on
the bottom. That cab stays a constant 73F/23C. It's a little loud though.