I'm looking at a piston air pump, not sure which one though. Otherwise I would need something like a luft pump on each and that would get too much. As for airstones I think I will be going a DYI route there too and make them out of basswood. As for a becket, I have an AeroFoamer that uses a becket and I think they are great skimmers, BUT I have been reading a lot on line, plus Calfo's book and Escobal's and I have come to the belief that counter current with a slow flow on a tall skimmer is the best way to go. For a becket to work properly the water flow has to be so quick that some of the stuff isn't getting stripped away. While I look at these high end skimmers and see the skimmate, and it is good, I am struck by the science that is put forth in Escobal's book.