I have the overflow problem under control. I think I just got too cautious. It seems to have stabilized. I have been experimenting with the skimmer. When the pump is only submersed about 75% of the way, it seems to be making the bubbles the way it should. Once the pump is covered completely. Just a nice tornado is formed. I can see some bubbles, but not what I would expect from other skimmers I've seen. Any advice?