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Unread 01/08/2011, 07:28 PM   #6
mordibv
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Join Date: Feb 2002
Location: Western Mass
Posts: 1,499
I agree. I would not turn off my skimmer unless doing so in the daytime cycle. Oxygen levels drop at night . Respiration is co2 which is why if you take a ph reading in the morning it will always be lower. Like others say it's wear and tear on the pump . It's a safety factor I just don't want to be without... Leave it on all the time ..


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