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#1
12-03-2011, 04:05 PM
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What is the temperature? And do you have a lot of aeration when you have your pump running? what tank size and number/size of fish?
It could be that the oxygen level is already a bit low when the pumps are running so when you cut off the pump this low level of oxygen is depleated fast. I can't think of anything else. Ph is a little low if it was day time with light and aeration so that could be it. Are they breathing fast?
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_________________________ More fish die from human stupidity than any other disease... 
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