My Aqua medic peristaltic top off was becoming a hassle. One way valves, greased tubes, and that clacking noise every few minutes as it fills 20cc's. My nearest local dealer had the Blue Marine brand, same as the new Aqua Medic topper offer but a few clams cheaper. It's to easy! I like it. It's so quiet. Blue Marine! Same stuff, better price. I'm going to start looking at brands other than top names. There are many quality devices that do the job just as well for less money.
Mark
Mark