What are these please?

[Thomashtom]

They are all over the glass , basically everywhere!!! This is in a tank that has been running for about 4 years. Thanks for your help. Tom

 

[Mikedawg]

Probably some limpets

 

[Thomashtom]

Ok thanks I am assuming there beneficial?

 

[Mikedawg]

Yep, algae eaters

 

[Thomashtom]

Thanks there are some different shaped things . Are they all limpets? Copepods don’t come out in light right?

 

[Mikedawg]

Thanks there are some different shaped things . Are they all limpets? Copepods don’t come out in light right?

Probably spirorbid worms - filter feeders and can be easily scraped off using a credit card

 

[Thomashtom]

Thank you

 

[reef lover]

+1