Fishfur
Aquarium Advice Addict
There are a few species that come from softer waters. Orange Rabbit Poso, Chocolate Poso, a number of others. Poso is the lake they were found in, same general area as the Sulawesi shrimp. I think these tend to get their calcium from diet more so than the water column, and have the same general shape shell as MTS do, and as you have observed, those conical shells are much harder too, thus resist acidic damage better.
MTS shells deteriorate too, but usually only at the very tip of the cone, and it rarely seems to go far enough to bother the snails. Seems to be much the same with the much larger Poso snails. Some have colourful feet, some do not.. some have very pretty shells, some are pretty dull. Tend to be quite expensive though, and I have not had mine long enough to be able to say too much about them. I keep them in the same water as the mystery snails, and I hope they're going to be ok. Giving them their own tank with softer water would be possible later, but not now, and they all were kept in local water before I got them, and were breeding in it quite happily. So I hope they'll carry on doing so for me.
MTS shells deteriorate too, but usually only at the very tip of the cone, and it rarely seems to go far enough to bother the snails. Seems to be much the same with the much larger Poso snails. Some have colourful feet, some do not.. some have very pretty shells, some are pretty dull. Tend to be quite expensive though, and I have not had mine long enough to be able to say too much about them. I keep them in the same water as the mystery snails, and I hope they're going to be ok. Giving them their own tank with softer water would be possible later, but not now, and they all were kept in local water before I got them, and were breeding in it quite happily. So I hope they'll carry on doing so for me.