New lights

[dcox88]

I just got a set of 2x96 Power quads. I am going to build my own canopy for it.
My question is how much height should I leave between the glass and the lights?
I know there has been quite a discussion about glass or no glass, but the instructions for these lights say the tank must be completely covered. I don't want to break my glass so I am considering getting an acrylic sheild, I don't want to melt the acrylic. Any tips on how high to build the canopy?

 

[gsxr750dgo]

GO for the plexiglass, there are many types of pglass that are close to heat resistant. Also, put at least 2 fans to help the heat down. Also the light must have an offset atleast 6 inches.
GOODLUCK

 

[dcox88]

what do you mean by an offset? Do you mean height above the plexiglass? I already have 2 fans incorporated into my plans. Thanks for your help!
Also, if I use the plexiglass? what about leaving a small area open for aeration? Do I need to do this? My tank is a corner tank and currently there is a 10 inch plastic triangle at the rear of the tank (over the overflow - the tank is reef ready). The rest of the tank is covered with glass. Should I have the plexiglass cut to the exact dimensions of the glass cover?