Tom, I got one of those 5 gallon bucket feeders from William Lim. Original manufacturer was... I forget; an aquaculture designed thing. Was a bit dusty -- he may still have one or two in the warehouse.
Just hook it up to a digitial timer from the hardware store and let it go.
I never put alot of food in it because I didn't feed very much. Maybe a week's worth at a time. But it sure makes it easy to feed the fish while I'm at work.