white spots (maybe spiral)

[e_murray]

I have these whit spots coming up all over my tank glass. they are hard spiral spots. anyone have a clue what these are?

 

[Patrick93]

There filter feeders they release a slime membrane to collect food I wanna say it's a type of snail or worm but there not bad just annoying in my opinion hope this helps

 

[e_murray]

will they grow into something else?? or just stay as white spots on the glass??

 

[Patrick93]

Mine have stayed the same I scraped them off the glass but I see them on some rocks and just leave them be

 

[Sergie]

They're spirorbid worms. As mentioned above, filter feeders. Harmless and they go as quickly as they came.