K well my cab is 32 c.f. Do you think a hydrofarm 180 or 265 would be enough? If I were to get a cool tube would i need to buy an inline fan in order for it to work right or could i have one end be a passive intake that draws air over the bulb then into ducting into my squirrle cage?? I've found the new fans online for $80 for the 180 and $95 for the 265. I'm probably going to pull the trigger and order something offline today to help this problem as soon as i can.