Too much turbulence in a small area. The bubble trap would have done a better job than the foam. I don't like foam. I have changed the pump out from a Mag 12 to a 9.5. This slowed it down some and when I get the refugium on line, that will reduce it further. I do have a filter sock on the drain pipe now, but it is more of a mesh filter bag than a denser sock.
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