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Originally Posted by EmilyB
Bob (and other skimmerless, sumpless people trying to keep larger fish), you have to do something about oxygenation in your tank. A ripple on the surface just won't do it.
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boB had ich brought into his tank by the tang which is what killed his fish. Don't know about how much water circulation he has in his sumpless, skimmerless tanks, but in mine, I run as many high powered powerheads as my tanks can take without everything blowing to kingdom come. Didn't have to learn it the hard way, either. Just read books on how much flow certain corals needed and went from there.