<a href=showthread.php?s=&postid=10912998#post10912998 target=_blank>Originally posted</a> by nyvp
first question is what can your skimmer handle and then thats what you want for a return or 3x5 times your sump is what they say. I like the seq 4200 better then the dart, it's the same back end as the dart but handles head pressure better. Thats what I'm using on my 560/g