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Old 12-26-2005, 09:01 AM   #1
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length of light

I have just started a reef tank in it's second week, and I was wondering how long I should leave my compact flourescents on for ? Right now I have them on for 13 hours a day, but brown algae is starting to grow at an enormous rate (my phophate level is high too, but took care of that). It's probably excessive amount, but when I eventually put corals in the tank isn't 12-14 hours suggested ??

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Old 12-26-2005, 09:28 AM   #2
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It probably is diatom algae and that is a naturla part of the tank cycle. In a new tank with nothing in you can have the lights on for a few hours a day. I run my tanks for around 11-12 hours a day. It all depends on what you want..

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Old 12-26-2005, 04:43 PM   #3
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