I forgot sorry
the best air pump would be a 12 volt blower used to inflate swimming
floats or inflatable boats,, you can find these at Wal-Mart for under 20
bucks, just get some plastic hose to run from the pump to the bottom of
the container, you will need to weigh down the end of the hose, to keep
it down

--
Rodney Long,
Inventor of the Long Shot "WIGGLE" rig, SpecTastic Thread
Boomerang Fishing Pro. ,Stand Out Hooks ,Stand Out Lures,
Mojo's Rock Hopper & Rig Saver weights, Decoy Activator
and the EZKnot http://www.ezknot.com