For a 180 with center overflow with dual returns, what diameter returns would be better 0.5 or 0.75 inch considering dual 1" drains with sump flow between 1200-1500 gal/hr. I will have 2 Wave2K center units for in tank flow (approx 4000gal/hr each).
Also would it be better to have an external or internal return pump? What brands would be good?
Thanks for any advice /info
Also would it be better to have an external or internal return pump? What brands would be good?
Thanks for any advice /info