i know nothing about african aros, but they do sell filter feeder food for corals, and many people feed various filter feeders (shrimp, bivalves, daphnia, etc.) with ground flakes, pollen, yeast and/or many other homemade concoctions. They normally shut off their filter, feed, wait a bit for their animals to eat, and turn the filter back on again.
If the problem is just the small mouth, they may be able to eat that gel food stuff people make/sell for goldfish.
If the problem is just the small mouth, they may be able to eat that gel food stuff people make/sell for goldfish.




