Tilapia are pretty crazy. I have some young (couple week old) fish in a 100 gallon rubbermaid. I was feeding bloodworms 2-3x a day, and they are happy campers. I have an aquarium light over the tub, and one side of it was getting a decent amount of algae growing on the sizes and the bottom as I left the light on quite a bit. This is just thin algae on the surface of stuff. I went on a 2 day trip, came home, and all the algae was gone, and saw them mouthing the tub and the filter to eat every little last bit. No more algae problem. They are little eating machines.
