I have no secret, It's as much a mystery to me as it is to anybody
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The only thing I add to the tank is fish food, kalkwasser and RO top off water. I do occasional water changes, have activated carbon and a pathetic red sea berlin protien skimmer.
I have just about every pest algae you can get in there and an angel that trims my acros regularily. I was adding reef roids but I haven't in the last 2 months and haven't noticed any difference what so ever