Hey Congratulation,

I've got activity going on in my tank too, about 3 weeks ago 3 male Pink Tilapias started occupying and guarding the breeding pots. About 4 days ago one had a female companion in the pot with the male standing guard out side.

As far as the food supply for the small fry, the breeder that I got my fish from puts them in green algae water as they food source.

I know that I have algae build up in my breeding tank that's inside my main tank. I do have a small algae fish in that tank but with out the large fish eating the algae, there should be plenty for the Fry's.

Not sure if that the right answer or not, I was waiting for other to reply but thought my answer was better than nothing. Good Luck