what is the temp of the outside air being drawn in? i have a 400hps and need 360cfm to keep the temp in the grow to the same as the temp in the house 72-77. just curious? i have been thinking about using outsuide air intake but it would just be seasonal because the outside temps where i live can get below zero in the winter and above 100 in the summer. i haven't done it for this reason.

btw nice set-up you got there. may your buds be dense and sticky!
justaseed Reviewed by justaseed on . first grow!!!! This is my first go round with this so i thought i would start a little log!:) Day 12 for these little guys 4th day under 400w MH. Cabinet is 4'x4'x4' introducing outside air into cabinet with 6" furnace booster fan. With 120 cfm computer fan doing the exhaust work ( check out the temp ). The top temp ( in= room temp) the bottom temp(out = cabinet temp ). To me the temps seem ok but that dont meen nothing as like i said first go round :) Rating: 5