[Jaws]

So I'm having a bit of a problem with feeding lately. Because I work a 8-5 job but don't get home until around 6:00, I'm only able to feed twice a night and usually the feeding is a little heavier than normal because I can't feed more often. I've considered an auto feeder but I imagine that the flakes or cyclopeeze would just float on top of the water and end up going down the overflow. Can anyone comment on this? Can anyone reccommend the best autofeeders?