Originally Posted by friend4fugu
well, it's foaming again! is that how these skimmers work? obviously i'm a noob.
Yup... that's how they work! Don't expect a constant flow of gunk in it. I've got the Remora also, and it has it's heavy days and its light days. Sometimes it's just based on the amount of dissolved organics in your water. Sometimes it's from something introduced in the water, like just a little bit of oil from your skin. If you really want to see it go wild, check it out after you take a turkey baster to your rocks and blow them off!
One thing you might do, if you haven't already, is clean out the collection cup and specifically the tube rising up into it. No soap... just water. As gunk collects on the tube sides, the efficiency of the skimmer decreases. I do this cleaning every week or so.