I have not tired the flake food would like to, I have used there Mysis pellet and Brine shrimp pellet and they seen to really like it. I have a Eheim feeder and I mix things up. I will put some Omega Flake in then some pellets and then O.S.I Flake ( great food ) and maybe some NLS pellets. The new AlgaeMax pellet is a great product my fish just go nuts for it. So then I top it off with more flake and shake, feed times are 4 times a day ( every 6 hrs. ) and 2 time per feeding so it will dispense once and then one minute later again fish are happy, inverts happy and tank is happy. I also try to feed once or twice a week some frozen food. If you think of getting a auto feeder get the stand also as it has a cup area where the food falls into and slowly sinks and then get gets blow around the tank and not into the overflow.
Skim