I have a 90 gallon reef with a 50 gallon sump, 90 has approx.70 gallons of actual water along with approx. 22gallons in the sump, been doing a 25% WC twice a month. Seems to be working ok.
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Hey! I never "LEFT" the hobby, just doing fresh water now. Which is still listed as part of Canreef if I'm not mistaken.
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