For a while now my Coralife 125g needle wheel skimmer has been acting irratic. I have been using it for about 7 months. It always seemed to work ok, but the amount and concentration of skimmate just didn't seem that great. Recently the thing just quit bubbling. I dissasembled and cleaned the needlewheel/venturi assembly, all the air inlet orifices and it worked ok for about 3 weeks. The other day no bubbles again. Just for the heck of it(and I didn't feel like taking it back apart), I bought a very cheap air pump from wal-mart $6, and some clear tubing $1. I hooked the pump to the air inlet, and got some massive bubbling! I have had it hooked up several days and the amont of skimmate has at least doubled. It is also much more concentrated. The picture is after only 8 hours of use(45 gallon total system). Has anyone else tried this or something similer?