Whatz up WaZ?!

Nice wording... I thought I was taking a high-school physics test reading the first two sentences...


HPS bulbs put out a LOT of heat... as opposed to MH bulbs. (same wattage being considered)

I suggest you build a cool tube like the one you linked to. In addition to the hurricane glass MellowMan used, you can eBay "Bake-A-Round". Those kick ass, without a doubt.

I used to cool my 400W MH Bake-A-Round cool tube, with ONE 45CFM fart fan. Ducting and all.
Once, the fan's relay did not turn on... and the temps never went above 90ish. Amazing.

You definitely need to step up your fans. The small ones you are using will not help... even if you put them up 8 in a row... even if you do a wall of 16x16 of them. They just are not designed for such tasks.

(1) Fans
(2) Cooltube
(3) Testing

Depending on how much ductwork (how many feet of ducts, both intake and exhaust, upstream and downstream of the fan), you are going to have to adjust your fan size.

If you want to go all loco and stuff, buy a Fantech... those fans will suck dust out of wall switch covers, and they will bend doors with the vacuum, I kid you not. They are expensive.

Alternately, try out a few setups. Maybe a 45CFM fart fan pushing air IN, then after the cool tube, another 45CFM fart fan pulling the air out.

Let us know how it goes!!

Best,

-turtle420
.
turtle420 Reviewed by turtle420 on . Cooling in small spaces A wooden box with dimensions 36"x20"x60" (25 cubic feet) sits inside a closed space measuring 37"x61"x93" (121 cubic feet). The closed space is used for storage and so actually has less room than that available. Is it possible to use a 400 watt HPS light with hood inside the wooden box and still maintain optimal temperatures? Preliminary tests suggest that temperatures easily exceed 100°F within the box, using 2-3 80mm fans each on intakes and outtakes. The light itself generates most of Rating: 5