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175W enough for SPS?
Alright I'm stuck. Again
Is a 175W MH gonna be enough to have SPS? The tank is only a 20 tall, and I'd rather not have a more powerful light than I need, since I do plan on running them for 8 hours a day. But if I get the 30 tall which has the same dimensions but longer, I might want something more powerful... any thoughts would be helpful.
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Calvin --- Planning a 29 gallon mixed reef... Last edited by BlueAbyss; 02-07-2009 at 08:44 PM. |
#2
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Hmm I should have put this into a different spot, it should probably have gone into the equipment forum.
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Calvin --- Planning a 29 gallon mixed reef... |
#3
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Yes you can grow most sps under 175 watt MH but many of them will need to be placed fairly high up to get good colour.
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Greg |
#4
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Iwasaki 14K (sometimes called 15K) 175 watt MH with an electronic ballast has been tested to have the most PAR of the 175 watt bulbs.
Cheers, Vic |
#5
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I used 175w for the first year of SPS keeping. They'll live, and grow a bit, but not the same as you'd get with bigger bulbs. Especially if you go deeper, you'll want at least 250w.
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Brad |
#6
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The 175 watt Iwasaki with an electronic ballast is supposed to have as much PAR as any 250 watt bulb according to Sanjay Joshi.
It's a pricey bulb though. Cheers, Vic |
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Quote:
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#8
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Indeed, upon further reading the Iwasaki bulb is very white when run with a good electronic ballast. So that's what I'm going with
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Calvin --- Planning a 29 gallon mixed reef... |