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I have a refugium on my 220 and am now upgrading to a 300. The sump is 36 inches long (30 gallon) and has 3 (4 inch) socks. I also have two mp60'sfor flow. Is this sump large enough.
It looks like it might be an old Euro-Reef. Does it have a name on top of the lid? If that's a 30 gallon wet/dry turned into a sump/refugium, I think that skimmer is a bit small for 300 gallons.