Any ID on this creature

I have about 1000 of these they started just a few on glass and i kept scrapping em off, and then i let em ago because it was getting to be a lot of work and now they are all on glass and on live rock, seem to eat small GHA i had, looks like a snail or something with a spiral tube like shell, but i have no idea, sorry can't get a better pic, they are extremely tiny about the size of the point on a pen, about 1/10th of a dime, any ideas, good or bad, pest or buddy bud b great thank you in advance

 

funny coincidence I found one for the first time yesterday on my Zoas....looked like a pyramid snail........needless to say i banished it to my sump but i highly doubt it was the only one....

 

One rule I personally go by: Pests generally have one target prey. Pyramid snails target clams and won't thrive long without one. Same with Sundial snails and Zoas. If the snail in question is eating algae, then it's safe to assume it's harmless.

 

What you have are not snails at all but tiny worms with coiled, calcareous casings. t is a Pileolariasp.They are not bad and in fact are a sign that your aquarium is maturing. Here's a couple good reads;
http://www.reefkeeping.com/issues/2003-05/rs/

http://www.advancedaquarist.com/2002/8/inverts

 

I believe there snails for sure. Maybe Pagojoe will see and chime in but if they are indeed pyramids then without clams they should run there course. Just keep an eye on them, especially at night

 

Agreed. I've seen the micro featherdusters with the coiled casings- I have hundreds in my current tank. They look nothing like what I see in the pic.

 

I didn't even see the pics until I read mr bills post. feeling pretty small right now.....Yes snails for sure.

 

Chin up, Bro. Everybody makes mistakes.

 

i think they maybe Rissoids and thoughts
also thanks for the replies