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Originally Posted by Rikko
I should mention that presently, lumens/watt output is still the greatest with MH/HQI..
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don't get caught up with the lumens per watt thing or even lumins for that matter. the big difference is the actualy intensity of the light sourse which allows it to punch more light deeper into the water.
a good example here is with my two 96 watt PC's and two 95 watt VHO's I got an average PAR reading of 280 at a depth of 12"(7 of that water) so that is with 382 watts of light. One SA SE 250 watt bulb on a HQI ballast give me a reading just shy of 900 at the same depth, with only 250 watts of light output. so the intensity of the point sourse type light far exceded that of the gas tube type.
Steve
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04-21-2005, 10:56 PM
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