Hi friends,My name is saba and I have two star torts which I rescued from my uncles farm.They aree healthy as said by a vet.My only concern is what calcium supplement to be provided.I give them cucumber,ladyfinger,dhaniya,parsley,and hibiscus flower and leaves in mix salad form and they enjoy a lot.In my flat we don't get early morning sunlight so I normally put him in sun after 2pm.When doing so their poop becomes whitish.If not placed in sun its normal vegetable form.What should I do to get enough calcium.