the shop advised nutrobal and cali dust but someone said the D3 in the calci dust was harmful as can overdose on it and to use pure calci

on internet i read somewhere they need the D3 in it.Can be a bit confusing lol.
Yes he has fresh veg daily and eats his veg and crickets and poops plently so i think iv that bit right lol.
What do people think of water bowls and bathing your dragon?