<a href=showthread.php?s=&postid=9405364#post9405364 target=_blank>Originally posted</a> by zachluhrs
You want them to be on opposite ends of the tank not directly facing one another and try to get them at different levels. I would run the 6000 continuous duty (Maybe 60-80% power) and have the 6100 giving pulsing bursts. You'll have to play around with placement and power too achieve total circulation and try not to destroy the tank in the process. You could even try and hide one of them in the rockwork. Hope this helps some.