I swear every since I bought them (1 month ago) they are already like 30% bigger than when I got them, I can see the new marks on the shells since I bought them.. I find it awesome but if they keep growing at that rate I might have to get them a new tank in like an year... LOL!
I know they can get this big:
Although they are not even close to that size.. But it's still funny.. I'm feeding them everyday with replacements (maybe is overfeeding that is triggering the over growth) but if they are growing so much I need a calcium supply for the shells.. uuugh.
They used to pass on the skull's eyes now they try but cant lol! The are too "fat" for it.
I just don't know if I'm a "superb" owner or if I'm doing something wrong sometimes xD
These are them when I got them:
You can see no shell marks;
And these are them now;
I've heard you can feed snails egg shells for a full calcium replacement but I'm not sure that works for freshwater snails. :V