Thread: SPS, MH and bulb distance
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Old 02-09-2011, 04:21 PM
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Hangfire Hangfire is offline
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Location: Surrey, B.C.
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I have one 250 Watt MH that's somewhere between 6 and 8 inches off the water surface. I have but one SPS that's probably only 8 to 12 inches under the water and it's doing great, so far.
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