Yes, i did feed thoughout the summer..It's interesting that the tilapia ended up dominating in my pond more than in yours..not sure why that would be. My initial stocking of tilapia was probably higher...The minumum order was 10lbs., which was probably too many for my small pond.Not sure which kind of tilapia i have..Mozambique, i think..It will also be interesting to see how our smallies do next year..Bob Lusk said his made it through the first summer, but not the second..so we'll see... I'm hoping my Aeration and shade will make the difference