What are these.

[tmm161]

I feel my tank is on stage 2 of maturity. I see these white shell is started to cover the back glass. (Please identify)

also water parameters are doing well. I will pull numbers Wednesday.

last but not least any suggestions on a better look to this tank. All suggestions are appreciated..

 

[TnFishwater98]

I would need better pictures…Under whites is usually better

 

[Stephen8169301]

Spirorbid worms filter feeders

 

[Red_Beard]

Hard to tell in that pic, less blurry with whites is always recommended. That said, from what i can see i would lean towards spirobid worms

 

[tmm161]

Spirobids. Ahhhhhh. Makes sense. Usually, this would mean I would have a decent amount of different copepods too??

 

[Red_Beard]

No, their presence is not tied to copepods.

 

[TnFishwater98]

Did you take better pics to verify? Or are you sure they are Spirorbids?