I've got a problem going on in my sump and can't figure out what is going on. Changed filter socks like I always do every two or three days. Now with clean ones in place after a few hours the fill up like they are dirty and the water level on top of the two socks gets really high until I pull one out and let all the water drain into the sump. It does it every time I've put clean socks in. Any body have any ideas what is going on or a fix.