Thread: 150 or 250W DE for 20" water depth?
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Old 06-06-2009, 04:44 PM
alamo alamo is offline
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You need 1 MH per 4 square feet(2'X2'). You are close enough to get away with 2, but make them the 250W(for 150W, I would go with 3) and hang it off the ceiling a little higher.(the reason you need 250W)
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