I have a skimmer that I'm not sure if the make/model. The important issue is that the water level only gets to mid level or so. I do see gunk in the collection but I don't know how it gets there because it doesn't seem to rise up to the top unless I've turned the main tank pumps off and the sump level rises.
My thoughts are that the main skimmer pump isn't strong enough. I don't think the one in the sump is an issue because it just feeds the water.
I'm trying to avoid dropping. $200 on a reef octopus.
Another note- it's installed externally and connected with PVC