if ADEQUATE uvb light is provided vitD3 shouldnt be necessary. however i have read in magazines and other published pieces that most 'full spectrum' lights may have some uv, but it is almost always in the wrong part of the spectrum or not intense enough to truly simulate the necessary uvb. i have heard of more vitD3 deficiencies than overdoses so i think it may hurt more to not give any than hope they are getting enough and give extra, especially since almost all turtle foods have it as an ingredient, i dont give it as a powder, i just give foods that contain it. as far as feeding you are right, but i like to be extra careful. i dont want to have to deal with even the possibility of infection or disease, and so far i have been able to give them complete diets this way. but thats me and i understand and dont oppose your methods. the best way to feed live fish is to keep them in a seperate ten gallon or so tank with a filter for at least a week. this allows observation for disease, preventative medication if desired but be careful because they may build up to deadly levels in the turtle, and feed the fish to boost their nutritional value because almost no stores feed their feeder fish, and whatever is or isnt in the fish is what goes in the turtle.

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