WTB: Overflow box

Oct 13, 2005
For my 47 gallon tank. It needs to be external, and preferably with the tubing and everything. I'm trying to add a sump to my octo tank, and incorporate a refugium into that. if I am successful, then I may try raising a few bandensis in the refugium. LMK if you have one that you're not using, because I really need one. Also, how many GPH should it be?

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