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Old 03-26-2006, 02:58 AM   #1
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What is the # of hours MH should stay on?

I have a 20K MH coralife system 300W total. I wanted to know what is the # of hours I should keep them on? I have Hard and soft corals, zoos, etc. I usually have it on for 10hrs. I wanted to know if I can cut it back? Thanks what is recommended? Thanks
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Old 03-26-2006, 10:31 AM   #2
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i run my PC light for 12 hours and the MH for 10. HTH

Jason
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Old 03-26-2006, 11:25 AM   #3
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PCs=10hrs, MH=8hrs.
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Some people are like slinkies...they serve no real purpose yet can still bring a smile to your face when you push them down the stairs!:p
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Old 03-26-2006, 11:45 AM   #4
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Lando,

Is that your recomendation or your photoperiod? I've always read 12 hours of 03 and 10 hours for 10k whether they are PC or MH.
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Old 03-26-2006, 11:46 AM   #5
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That is my photo-period. I did use a 12hr period when I was just running CF. I cut back when I upgraded to MH.
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