I'd like to pickup a new pump for the return and not sure what route to go. Tank is not drilled and I'm running about 5 feet from the pump to the out flow with a 4 foot rise.
@ 3 X turnover you are looking @ 750GPH.
A single overflow box is usually 600GPH.
You will need either a dual overflow box or 2 singles.
Use the RC calculator to figure head and pipe loss.
This will give you an idea of what you need.
There are not any markings on the overflow and I do not have room to add another due to the tank being flushed mounted in the livingroom with a "clean" view into the office on the other side. It is a tight fit right now...
The return is on one side of the tank with the overflow on the other end. I can take some pictures if that will help on suggestions.
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