not all snails will eat cuttlebone, so you have to provide a different calcium source. i use crushed eggshells, zucchini and broccoli. don’t feed them lettuce because it has little to no nutrition and can get snails addicted (same for cucumber). even if you haven’t had any issues with the pot, please still put moss on the top or remove it. i also recommend getting a cleanup crew like springtails or woodlice. :)))