Overflow VS. Return Pump.

Reefers used to want 10x turn over through the sump but I think nowadays most are going with half that.
Yeah I've got 350gph turnover on a 75 gallon, only because I didn't want to buy another overflow when I upgraded tanks. Could definitely use some more turnover though, eventually.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%

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