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!