Originally Posted by xxnonamexx
That's odd one in and one out. I just purchased a Aqualight Advanced Metal Halide and they said the sides suck the air in and the 3 fans on top push the air out so why would putting a fan on the side help if it it pushing the air out that the MH
is trying to suck in?
Yours has multiple fans. If you are doing diy
with a canopy, you need to have an in and an out(You have two ins and three outs). The diy
with two is to pull air across the water to pull the heat away from the water and keep it from overheating. If you want 5 that's fine but most people who are building their own don't want to go to the trouble and expense to buy and wire 5 fans. Ours has 2 250w mh
with a flourescent set up also, with 2 fans and the water stays at whatever my heater is set at.