Snails from moss balls

[glock26]

They are to small to take pictures of. I got 4 marimo moss balls recently. Claimed to be 100% snail free. 3 weeks later tank is over run with snails. Only recent to tank I almost a year so I knowout came from those. No idea what kind of snails. Any ideas other then assassin snail to get rid of?

[Autumnsky]

Are they cone shaped like Malaysian Trumpet snails, or little spirals - Ramshorns, little oblong - Bladder aka Pond snails or something else???

You can check the shapes of these in a search and see which ones are closest.

For now manually remove them if you do not want them in your tank. If you can smash the shell and you are okay with that, you can feed them to fish most will eat them.