<a href=showthread.php?s=&postid=9575009#post9575009 target=_blank>Originally posted</a> by rvitko
For SPS and coarse sand or bare bottom 2 6080's otherwise 2 6060's would be fine with the 1 hr interval, I would do it such that the pumps off and on times overlap by 10-15 minutes to create a surge.