How big of a tank does a yellow bellied slider turtle need?

The first year the Yellow bellied slider will grow about 4 to 5 inches and the second year - it will grow to 6 to 7 inches. In the third year it will grow to its maximum size of 8 to 13 inches. Hope this will help you.

Regards,

Wing Wong I have read that females can grow upto 12cm (males are smaller) but I am not sure how accurate this info is as I don't know anything about them I am looking into them for a friend!