other than maybe the reasoning lower flow through the sump too have a small return pump, therefore less wattage, being greener, smaller environmental footprint (and then should be rethinking about having a tank in the first place), can't buy into the rest of the excuses. Nothing wrong with the return pump contributing to the overall turnover of the display
Just love these internet guidelines, other one I like from RC is you should double the inlet and outlet pipe size fr what the pump has.
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