Well, I have my 2x250 MH
/T5 retro fixture and the canopy is built but I am trying to decide on fan placement.
I had originally planned on putting the fas in the back but I only have about an 1.25" between the back of the canopy and the wall. I thought this might be a problem with pulling salty air out and messing up the drywall?
So now I am thinking of putting them on the top. With the lights being about 12" off the water, I can't see on top of the canopy when it is on the tank, but I worry about light escaping. Any thoughts on this?
I am also planning on using 2 80mm PC
fans ran of a 9v AC
plug. They seem to move a good bit of air and should not be real loud. Not sure how long they will last but I don't need them anymore anyway.