If you only want to keep them "in check", add a few (2-3) assassin snails into the pond. They only eat small (baby) snail and are too small to tackle a Nerite for food.@Kannan Fodder, ironically, I bought some of them on sale. I don't mind the pond snails persay just want something to make sure the population is going to be kept in check, plus snacks for the tank aren't bad lol! We got 3 & call them the 3 storms... now who knows what 80's movie that's from?
This isn't true, assassins will actively pack hunt in order to take down larger prey.If you only want to keep them "in check", add a few (2-3) assassin snails into the pond. They only eat small (baby) snail and are too small to tackle a Nerite for food.