What is this?

[bobmakespancakes]

These white little dots that look like swirls are everywhere on my tank except the glass does anyone know what they are? (I don't know if this is algae but I don't know what this is at all.)

 

[bobmakespancakes]

more of it

 

[ScubaFish802]

Spirorbid worms! Annoying (in my opinion) to look at, but not harmful.

 

[daybreaksky]

little tube worms. part of bio filter

 

[vetteguy53081]

Spirobids which commonly end up in sumps, tank glass and overflow walls

 

[bobmakespancakes]

thank you they are everywhere and I had no idea what they were! I thought my tank was dying lol