I was looking to have negative pressure. I read in numerous places that you should have the intake be 1/2 the size of the exhaust, and 1.5x the size of the exhaust.

I dont know which one is right.

Also, should I downsize the fan?

Where can I find a guide for growing?

I'd love more advice!
Nighttimex3 Reviewed by Nighttimex3 on . New Grower. Will my setup work? Hey there. So I'm trying my first grow with 2 plants of Strawberry Cough. So far, Im thinking a 400 watt HPS light with air cooled reflector, a GrowLab 2'7" x 2'7" x 5'1", a 425-500 CFM inline fan w/ heat shield/sound muffler hooked up to a 6" x 16" PHAT carbon filter. I'm going to use a 3" passive intake. Does this sound like it will work? I plan on using soil. Any nutrient concentration recommendations? Also, how high do the HPS lights have to be from the plants, and can they be Rating: 5