starting the 125 gallon setup

[niloc16]

quagmire thanks for the link that is awesome, i havent read it over yet but i definitely will. what is the amount of pressure loss i will lose with the one dart on the closed loop. what about a barracuda it is 4500gph, but is it quiet?

thanks for the input jaws, see i've never run a sump before so i really appreciate the advice, after i read your input i had an idea, is it possible to still use the dart for the sump but to split it, as to use half the pressure to run the sump and the other half to supply returns?