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In my reading and experience a combination of live rock and good skimming contribute to a reef tank's success. Are you asking the question because you want to avoid using rock?
A larger amount of LR is analogous to greater water volume - they both allow greater tolerance for mistakes. I suspect if you go with a small amount of LR, your success will increase if you are willing to do greater and more frequent water changes.
I have 45 pounds of LR in a 30 gallon breeder tank. Even with that, I have room for corals and a light load of fish. |