I have 8 reds and 1 trionics, the largest bucket is enough for me for a maximum of half a year. Turtles are all adults, I feed them twice a week, once with reptomine, once with small non-oily fish. Most importantly, if the food is not finished, remove the remains from the aquarium, otherwise there will be a terrible smell. Or as an option, feed in a separate container with water, and after feeding, put back into the aquarium. The composition of the feed is the most optimal of all existing ones, See full review