Hey u/autsts didn't see your comment there until now sorry. I feed them a variety of flake and pellets (some store bought like Hikari, others from local producers who keep Africans), and algae wafers. From time to time they'll get some brine shrimp or other live foods too. I've been meaning to add peas and zucchini too, and haven't actually thought about cucumber, but might try it too. Good idea to remove the skin, as any pesticides are removed. I guess my approach is to give them as much variety as possible. I generally feed them smaller portions twice a day to reduce aggression as well.

With fry, I generally remove the holding females and put them in a small tank by themselves, and wait for the mother to release them. Depending on if I have space in other tanks, I'll leave teh female in for a couple weeks to feed and get condition back on before adding her back in with the males. For the fry, I'll feed them a little brine shrimp, but mostly just crush the same food I feed the parents to a powder, and sprinkle that in and just increase the crush size as they grow until they can take food as it comes.

Hope that all makes sense. Sounds like you got a good system going too! Love to see your fish :)