Hi Guys/Gals,

Designing my new grow cab and stuck on lighting. My space is a fairly small closet that measures 53" high, 20" deep and 35" wide.

I will be running a cool tube and as yet have not decided on a fan for the cool tube, however I will have a 120cfm exhaust fan for the cab and a couple of 120mm pc fans for intake.

My question is, in a space this size will i have heat probs with a 400hps in a cool tube?

If heat in winter through spring wouldn't be a problem and yields over a 250 would be substancially higher, I'd consider not growing in summer (temps get quite hot here) and getting the 400.

Any advice/help you can give would be greatly appreciated.

same Q,same size space,is 400 hps to much ???40"x22"x60",if not how many cfm thru a cool tube??thanks