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return pump vs. overflow

2K views 1 reply 2 participants last post by  Mafiaman 
#1 ·
I am in the process of setting up a 75g AGA tank with a built-in "megaflow" overflow box. I am thinking about a Mag 9.5 for the return pump but I am not sure what the flow rate is for this overflow box.:confused: Does anyone know the gph for a 75g megaflow overflow box? If I put a ball valve to restrict the pump output will it hurt this type of pump?
 
#2 ·
Restricting a pump with a flow valve creates back presure the same as head presure, So there is no harm. Unless you bring it to a stop then over heating is possible.
 
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