I played with the airlift idea too. Just forgot to post the info. I used an old under gravel riser with both a bare air line and with a diffuser. The most that I got was either 1 3/4 or 3/4 inch of lift. I was going to do a cheap setup with just Fiddler Crabs. I can't find native mud skippers or anything like them but I came home with a bunch of Fiddler Crabs a few weeks back. (Turns out that Stone Crabs or Blue Crabs love to eat Fiddler Crabs.) I have the pumps and timers, but the tank and time are not there. I am leaving on a three week trip this coming monday so it isn't going to be me to be the first to build it
oh well looks like it will be two mini pumps then