We change about 30% out of our 28 gallon once per week and we have a fairly large bioload. We did lose a batch of fish overnight once but the corals and inverts were okay so we still aren't sure what that was about. Some kind of weird spike. No other problems and everything seems healthy. We have had this tank up and running since November of 2006.
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PIER PRESSURE
28 Gallon Saltwater Reef Aquarium
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