Hundreds of tiny snails, good or bad?

For a while now I have had a bunch of these tiny snails that mostly come out at night but I do see some out when the lights are on. Are they good or bad? If bad, any natural predators?

 

Look at sundial snails. Those would be bad. There are good snails close looking to them but I really think they are sundials. Natural predator. .. look into non reef safe fish. Wrasse.

 

I'm thinking they look more like the collonista snails. All the ones I see have a light brown/white color and don't look anything like the sundials I have seen. I'm just surprised in the number of them. I have had smaller tanks and don't think I have had this many snails in any of them but this is a 180 and I got a ton. Guess it's a good thing.

 

Idk, I've got hundreds of the algae eating snails and look very different than the ones pictured.

 

The shell posted about half way down in this post is what the shells of these snails looks like. Looks more like collonista than sundial and they have all the characteristics, coming out at night and feeding etc. at night of the collonista.

https://www.livingreefs.com/threads/tiny-white-snails-what-now.27621/