Baby Turbo Snails

So I have noticed several of these white spots over the last week or two. Now that they are growing larger I can tell by the shell shape that they are turbos and I was wondering if I have seen 20 or so on the glass how many are potentially in the tank? Will they likely survive (they are roughly 1mm now)? Is they're survival thus far a sign of good water quality, basically is it normal to have them survive this long?

 

Congrats!
I hope they're turbos. Keep an eye on your zoas(if you have any).
I had some sundial snails sneak in my tank and they eat zoas.

 

Look up collonista snails

The Grazing Snails, Part I - Turbo, Trochus, Astraea, and Kin by Ronald L. Shimek, Ph.D. - Reefkeeping.com
Collonista are "mini-Turbo snails." They are seldom purchased by hobbyists, but are relatively common in reef tanks anyway, because they appear to hitchhike in on live rock or in some live sand. When hobbyists first see them, they presume them to be "baby" grazers of some sort. Instead, they have some of these animals. They reach a maximum adult size of about 1/4th inch (6 mm) in height and diameter. They are often tan to white and have mottled brown color patterns on the shell. They can be distinguished from all other Trochoideans by their small size and the presence of a small pit or hole in the center of the calcareous operculum that plugs the aperture. They reproduce well in aquaria, and are quite good grazers. If present in large numbers, they may effectively replace all other grazers in our systems.

 

Well I think they are turbos based on the shell shape being the same as my turbos so hopefully so

 

Very informative it is possible these are the same Ill keep all informed as they grow and I learn more