i have about 3 fans blowing onmy 400w MH ballast but the temps are still in the lower to mid 90's. I'm thinking of running a duct from the top of the ballast and exhausting the hot air out with a fan.. but i'm unsure of which one to buy...is it an inline fan or a squirrel cage fan? Also, does anyone know where i can buy a cheap one... every damn site i've been to sells them for $80 or more.. +rep to whomever helps me
