Why is the water level in my display tank constant???

Discussion in 'Filters, Pumps, etc..' started by russki1313, Aug 8, 2011.

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  1. elwolfe

    elwolfe Coral Banded Shrimp

    Joined:
    Jun 6, 2011
    Messages:
    398
    Location:
    Castle Rock,Colorado
    Your pump would send all the water to the DT (and empty your sump) if you didn't replenish the intake with water from the overflow.
     
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  3. Mr. Bill

    Mr. Bill Native Floridian

    Joined:
    May 28, 2011
    Messages:
    4,874
    Location:
    USA
    The pump is pumping water continuously into the DT, and the water is continuously flowing back into the sump through the overflow. Has nothing to do with the pump "knowing" anything as it doesn't stop. That's how the level of the overflow determines your water level.