Algae or Bacteria on overflow ID

[johnl405]

I have been having trouble identifying this algae or bacteria on my overflow. I’m thinking Cyno but the white things that look like tentacles have me second guessing. Any help is much appreciated.

 

[EeyoreIsMySpiritAnimal]

Is it only on the overflow?
When you remove it manually, how quickly does it come back?

It does not look like cyano to me.

 

[HankstankXXXL750]

I have been having trouble identifying this algae or bacteria on my overflow. I’m thinking Cyno but the white things that look like tentacles have me second guessing. Any help is much appreciated.
View attachment 2891811View attachment 2891812View attachment 2891813

Are they hard?

 

[johnl405]

Is it only on the overflow?
When you remove it manually, how quickly does it come back?

It does not look like cyano to me.

It’s only on the display side of the overflow. I don’t recall how long it took to come back but it doesn’t seem to be growing larger.

 

[johnl405]

Are they hard?

Soft

 

[HankstankXXXL750]

Soft

Ok. The tentacles made me wonder if vermetid snail, but if soft they are not.

 

[HankstankXXXL750]

And by the way, welcome to R2R.

 

[johnl405]

And by the way, welcome to R2R.

Thank you.