I've got a 172cfm Vortex fan for the carbon scrubber, but I'm also gonna need cooling for my 6" Cool Breeze reflector (holding a 600w Hortilux).
It'll be inside of a DR 120 (3.9' x 3.9' Secret Jardin Dark Room), which size fan will I need to keep it around 75-80 degrees? Would something like...