Snail death

Not sure this is the right place but would like some advise. I have had my seond snail death in 2 months. I have 4 speices of snails - the only snails that seems to be affected are my Asterea - both had fallen over and we up righted (don't know how long they were upside down)
But did not move for three days after I uprighted them. I also think I might have pyramid snails but not 100% sure. When I pulled out the first one there were 3 small white pyramid type snails on the shell (not on the body) also pulled one off the glass last night.
My question is do these little white snails affect turbo's, centh and nussarus snails? I had 5 Asterea snails now down to 3.

Anyone have this issue or have a way to rid the tank of these small white snails?

 

Did they have anything that looked like these on them? It could also be Eunicid or Polyclad worms. I've had both of those knock off some of my snails.

 

Yep the snail had three on him - so it is a pyramid snail - do they stay with one type of snail or will they no kill my turbo's and centh snails?
How did you get rid of them?

 

From what I've read they like to eat clams, but will move to snails if there are no clams. I can't say what snails for sure so I would just assume they can all be effected. The best way I have seen to deal with them so far is manual removal.

 

Some wrasses will eat them, like the 6-line and the canary, problem is the snails are nocturnal and active when the fish are asleep.

Best to do manual removal at night, when they are not buried in the sand.

 

Yea I have started to remove them as I see them - always at night.
Do they reproduce in aquariums? Could this become an infestation?

 

They do and will reproduce as well as many of the other snail species we keep in our tanks.

Do they look like any of these? pyramidellidae - Google Search LOL, ss you can see there are many species pyramidellids. As far as I know, the ones that specialize on clams are not the same species that specialize on turbinidae and visa versa

Keep in mind also that most Turbo snails and Astraea snails are Cooler water species and do not last very long in our reef aquariums.

Most Turbo snails live in water that is about 71 while some do well up to 78. But when subjected to these higher temperatures they tend to not live as long as we would like them to.

Allot of Margarita are sometimes sold as turbos and they are cold water snail that usually fry to death slowly over time also.

Astraea Snails also do better in cooler aquariums also, I have about 10 that I have had for over 2 years now in what was my seahorse tank, mostly because the temperature stays around 72 degrees. In my reef which is at 78 to 80 they do not last, again the slowly fry to death over time.

They also require allot of algae as food and will starve to death if there is not a good supply. they do better if supplied with algae sheets once in a while.

 

Yea could be any one of those - I didn't know Astarea snails were use to colder water - but makes sense. My tank stays around 78f
I did know margarita snails were cold water and should not be in reef tanks. I do have a refugium so I think I should have lots of micro algae. Maybe I will put a small sheet in and see what happens. I am sure the tang would love it.