Sump help please?

[cav~firez22]

Well, if i take them out, then whats to stop the "****" that falls down the overflow, into the sump, from going back into the main tank? The filterfloss does a ****ty job at stopping stuff.

im pretty sure there is air getting sucked into the pump. as i can see the micro bubbles in the sump. im pretty sure its not the pump lines, as i gobbed a ton of weldon 705 all over them yesterday.

Right now, i have the pump BARLEY running. the 2 valves are just opened by about 1/8th of a turn, and some of the micro has disipated, but there is still some in there.