Well if you are having a sump All you need to do is test the smp with the water turn off. Aftersee where you would like to have the water stop in the sump mark it and short the return line going into the main tank. HTH
The longer the return pipe in the tank the more water that will back flow in after the main pump is off. Unless you drill a 1/4" hole in tothe pvc pipe atthe water line to back draw to let air in and break the water coming back down..
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180 starfire front, LPS, millipora
Doesn't matter how much you have been reading until you take the plunge.
You don't know as much as you think.
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