Thread: What Configuration For 40gal Breeder Overflow and Return?
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Old 05-08-2012, 09:37 PM
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Hmm. Struggling with pump selection.

I'm leaning towards the Mag-Drive 950, as I don't think the Mag-Drive 700 will have quite enough oomph. Nothing that I've tried in the link provided by Greg seems to be anywhere near the right flow for my liking. The 700 will wind up under 400gph, and the 950 will wind up closer to 600gph.

Now, I can use the ball valves on the return system (there will be three of them) to decrease the flow into the tank . . . right? Can this harm the pump?
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