I've started growing some plants for my little Hermann tortoise and I put the plants in a soil called seedling mix. It has little white dots in it that are balls of perlite and dolomite lime which is a PH adjuster and I was wondering if that would hurt my tortoise? Should I keep the plants out of his enclosure just in case he tries to eat the white balls and just take pieces of the plant off and give it to him or are they safe for him or what would you suggest?