Hey I would like to know if anyone here keeps mystery snail big tank? Would it be to high for them to go at the surface and breathe (55 gallon)? Also is it really possible to feed them in bigger tank like this? I would be scared they eat all my plants because they don't find food... Last question, my water is soft so it is bad for their shell but would it still possible for me to have them if I give them food that has calcium?