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#3
03-08-2006, 03:01 AM
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I have a 1 watt over my 15, I get about 60% coverage with it being a few inches up from the surface and at a 45 degree angle. I wish I had gone with two 3/4 watts but I got a grea deal from a fellow reefer.
Considering the focus if you want full overage you're going to have to keep it a foot above the top or diffuse the light somehow. A scuffed up (sandpaper) piece of glass or acrylic might make a good lens for that. 
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