from now on i will only use inline pumps like a magdrive, i have gone through 2 pumps in 6 months a 1000 gph & a 500 gph " sump type". the thing is that u can't tell if the pumps shaft seal is leaking!!mine didn't show untill the pump failed!! thank god i notcied both times but it could of wiped my system out.I tryed to save money and found it pays to get a magdrive or atleast a inline /air cooled pump "u can see if it starts to lead on a in line, just make sure it's at the bottom of ur case!"