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Old 09-17-2008, 12:24 PM   #5 (permalink)
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Default Re: CO2 system suggestions for a 75gl tank

I think pH controllers are overrated as they measure the tank water, which generally has phosphates and other stuff that tends to buffer the pH, giving less than accurate readings. I prefer a drop checker for accuracy and a timer to shut off CO2 at night when it's not needed. Food for thought.....
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