Sump

Turn off return pump to simulate a power outage, and see how much the water rises. Then fill low enough to compensate.

Do you have a siphon break drilled into return line?
 
It’s a small hole drilled on top of return line, just below tank water line

 
What if a my return line is not over the tank but drill on the side of the tank? How do I set a siphon break?
 

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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