Last night I was adding more gravel to one of my tanks. I had an apple snail in there and it was getting in the way so I put it in a 5g tank with a family a trapdoor snails. I left the apple snail in there and a few mins a go I saw that the trapdoor snails were on top of her and eating her shell not just cleaning it. Her shell never looked good in the first place though. I have had cuttle bone in her tank before and it did not help. Is there anything else I could do to help her shell?

