I have an Eheim 1260 return pump, since it's in the same chamber as the drain (ELOS sumps, go figure) it draws up tons of microbubbles. Soon my new skimmer will also output water into that same chamber. So what to do? Easy solution, bubble trap around the return pump itself. My idea: One side the height of the sump, and then three pieces for the baffles. Push up against one corner, secure with just simple suction cups at the base against the corner, voila! Do you think it'll work? I hope to get rid of all filter socks and depend on the skimmer to do it's thing.