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Ok my turn. I have a 36x18" tank with only 1x 400 watt MH ver it. My current relector is only a bit larger than 1 foot squared, and my bulb is perpendicular (front to back).
The reflector I'm changing to when my canopy comes is 36" long so the bulb must face parallel. How far off of center should my bulb be to cast optimal light on the center of the tank? Also, the new reflector doesn't have one of those "V" shaped light deflectors that go above the bulb. How much do those actually effect my lighting?
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THE BARQUARIUM:
55 gallon cube - 50 lbs LR - ASM G3 skimmer - 30 Gallon sump - 22 Gallon refugium / frag tank - 4x 24 watt HO T5's - Mag 9.5 return - Pin Point PH monitor - 400 watt XM 20K MH in Lumenarc reflector - Dual stage GFO/NO3 media reactor - 6 stage RODI auto top up -Wavemaster Pro running 3 Koralia 2's.
Fully stocked with fish, corals and usually some fine scotch
http://www.canreef.com/vbulletin/showthread.php?t=55041
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