Holiday Fish Feeder - 7-day

I've tried different self-feeders looking for the best option, and though this one starts feeding sooner than the rest (a good thing), my fish still don't really get it. Maybe they're not to smart...but most of the food ends up getting sucked into the filter rather than being eaten.

Pros: Distributes food evenly and reliably

Cons: My fish didn't realize they were being fed...

This resembles bits of plaster but appears to have food in them. I don't know how good it is or how the fish know when to look for it but at least the fish survive while you travel. The battery operated timed release ones are probably a better option since you can feed the same food as usual and they hear it so they know to eat.

Pros: feeds "em

Cons: how well?