Ditto on what sprkplug said. I'm interested as well.
Price also might come into play. I know some members here that feed a LOT per month, IIRC some are over 100 pounds per month.
I noticed in my pond, when I fed the RBT all winter long, and the feed rate was around 1 3/4 pounds per day (for 50 pounds of RBT) that I had filamentous algae growing all winter long in the area around the feeder. I kept the ice open with my winter aerator in front of the feeder. More food = more FA. Last year I didn't feed, and I didn't have the FA problem.
