I use the jungle clear water for snails. I use about a teaspoon per gallon in whatever container you are dipping them in. It's pretty mild(much less concentrated than the crystal form). I've left xmas moss to soak in it for half a day without it doing any noticeable damage. As others have said, it takes longer than other dips, but it's worth not defoliating your plants with H2O2, bleach, or excel.