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You can blow a fan across the Teklight, but not with a shield on to protect the reflectors from staining unless you do the Hahnmeister mod (he bent an acrylic shield down at one side and put in a cross-flow fan to evenly blow air the width of the fixture.
175W IWASAKI 15K has an efficiency of .5261 on an IceCap ballast and will grow SPS at the sandbed on a 24" deep tank. It is the most efficient bulb ever tested by Sanjay (about double the efficiency of most other MH bulbs). What I claim only applies to this bulb on an IceCap or better e-ballast.
Light movers are also an efficient way to light a tank with less bulbs/electricity. I also don't like the look of a tank with lots of dark areas as the light mover moves.
James
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Old Reefers Never Die, they just...join the crew!
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