[BC Mosaic]

OK here is my set up of a 2 x 250w moguls lighting.
Foot print of tank top: (36" + 2 x 1/8th trim = 36 1/4") X (18" + 2 x 1/8th trim = 18 1/4")
Hood built using 1 1/2" x 1 1/2" lumber
Total height of hood frame sitting on top of tank: 13"
Open top
1/8" black plexi sheeting except for the back which is egg crate.
Reflector is 36" long and viewed on edge is sort of a Mansard roof shape except the peak is flat. The span is 12" (which gives me an opening of 2 7/8" to stick my arms in).

So the plexi ends will be replaced with a suitable material to accomodate the fans.
There really isn't any option as to where to place the fans except in line with the bulbs and sitting within the "Mansard roof".
So, do I blow in and out; in and in; out and out?