When it is recommended to have a refugium of at least 20% of the main tank, is this only the refugium volume or the entire volume of each section including the intake and sump?
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- That is what is confusing me as I don have media that I know of in my main tank, I use live rock and a HOB skimmer, no sump or refugium or mechanical filtration, so what media are we speaking of?
- When it is recommended to have a refugium of at least 20% of the main tank, is this only the refugium volume or the entire volume of each section including the intake and sump?
- With all of this flow and filtration in the main tank, how important is flow through the refugium?