I dont turn mine off to feed, no point really. The food goes everywhere yes but no one seems to mind and its more natural feeding to let them scramble for it. Gives em exercise they normally dont get. The way I use my powerhead is with the supplied rimlip bracket, it lowers it from 3-4" into the tank, no need to shut it down for feeding since the HOB
waterfalls pushes the food everywhere anyways.
Most fish chase down their food, only a select few regularly wait for the food to come to them. Mostly predators.