Quick question for folks... Ideally, for a 24" deep tank with a 3" sandbed (60 gallon cube) how high above the tank would you place a 400 watt MH?
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MH height
Quick question for folks... Ideally, for a 24" deep tank with a 3" sandbed (60 gallon cube) how high above the tank would you place a 400 watt MH?
A.J.
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6-12".
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Is that for any mh? Or can it be closer for better light penetration?
40g Breeder, 150W DE MH, 3 x 39W T5 actinics, CSS 125 skimmer, DSB, 20g sump/fuge, Vortech MP40W:bigsmile:
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For a 60 gal I wouldn't place it clser than 12" I had 2 -250watts on a 70 and they were about 12" from the surface and it still gave me great coverage.
Is Reef Madness Catchy???
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I run my 2x 250W halides PLUS 2x 100w pc 8" above my tank and have excellent penetration and no bad effects.
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I measure by splash factor, if the tank surface stays relatively splash free I'll put them about 8" or so, if there's a lot of surface activity due to pumps or tank guests or whatever then 10-12 inches is better. I don't like the lamps getting splashed.
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