Well I enjoy keeping RH snails. Mostly raised the red and red or pink and bronze to clear shells.
Over feeding is top issue in population exploding. I have low to 0 KH
and don't get much in the way of over populating to adulthood.
It does seem those with high calcium and minerals in their water do have an easy time keeping all snails and have much better shells and grow larger.
I always have to add Cuttlebone. Also feed some mineral rich foods like for my dwarf shrimp. Like Glasgarten Mineral Junkie and various shrimp foods, plus a favorite food is Hikari Crab Cuisine. They contain good amounts of minerals for shell health. Hikari CC is very economical, and I would suggest that for just a few RH snails.
New to FW fish? First tank in a long time or EVER??? Need some info on keeping fish?
Start here - Aquarium Advice Article
FW Favorites right now Clown Loaches, any shrimp - SW Vase Red Mangroves