I have a 70g sump with a 31g refugium, with live rock and rubble and several kinds of macro algae, on a reverse light cycle, for the 225g mixed reef tank.
And a 54g sump with a 16g refugium with DSB, live rock & rubble and a very thick growth of macro algae, also on a reverse light cycle for the 90g mixed reef tank.
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225g reef
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