I've heard that ozone breaks some organics down, and therefore helps the skimmer skim better. Used properly, I'm sure it couldn't hurt... but run some carbon in a reactor after the skimmer or run your skimmer effluent into the sump far away from the return pump, so the ozone has a chance to either escape or turn back into O2.
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Calvin
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Planning a 29 gallon mixed reef...
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