We have maintained, bred and reared quite literally hundreds of turtles over the past 20 years using this as our general, base-line diet. Where dried food, or floating food sticks, are to be rehydrated, rehydrate using water plus a calcium and vitamin additive. Live prey and salad vegetation should also be dusted in this manner immediately prior to feeding. This is a highly successful way of ensuring that your turtle will obtain all of the essential vitamins and trace elements it requires. On no account rely upon 'Turtle Flakes', dried shrimp, or 'ant eggs' as sold in some stores - these products are totally unsuited to the successful rearing of healthy turtles.
Most turtles fed on such diets die within a few months from multiple dietary deficiencies.
To avoid contaminating your turtles with Salmonella organisms, it is wise not to feed raw meats, especially chicken or pork - these frequently harbor the organism and if eaten by the turtle the disease will be passed on. Diets rich in meats are invariably also high in phosphates and low in calcium. This can cause serious problems for turtles, who need high levels of calcium for healthy bone and carapace development. Note that in the wild most aquatic turtles feed regularly upon snails and similar creatures which have a calcium-rich shell. Insect larvae, as taken in considerable numbers by juvenile turtles in the wild, are also comparatively rich in calcium.