<a href=showthread.php?s=&postid=14704418#post14704418 target=_blank>Originally posted</a> by drparker
Give us a little more info on your setup. Is your sump under the tank? What return pump? IS your tank drilled or over the top?
I use an external Ehiem with solid PVC to a combo ball valve/union and then Flex PVC to bottom of Reef ready tank.