fly, I also use a mixer/blender. I found a small Ninja on sale at Wally World, and it only takes a pulse or two. I store the pulsed food in a Tupperware bowl, and keep it close all the time.
I also use an anchored hula hoop to corral the floating food and have had good results. Small fish have teeny brains, but they seem to figure out very quickly where the buffet is.
