I find white spots on my turtle (over add calcium) Anyway to remove those dots ??

Answer 1

This is probably shell rot- of which there are many kinds. If the spots are fuzzy, it may be a fungal growth. If hard and bone-like, it could be bacterial or injury-related.

Try http://www.austinsturtlepage.com and go to the medical section.

Answer 2

you qouted "over add calcium" did you mean " over added calcium"?
if you did just lay the turtle in some mid soapy water for a little while (make sure the water level isn't too high) and the calcium build up will dissolve off.