Hey guys. It appears that my protein skimmer is not working properly. It does not seem to be skimming at all. I figured I would start with it bubbling bout 1/2 way up the tube and then go from there as far as waste producttion goes. The thing is I do not seem to be getting any waste production at all and I know it was working before. I was told when cycling my tank to turn it off and it was working fine then. Now that I have turned it back on though it seems to be getting nothing in its collection cup