Can any one tell me what this is

[Jaden]

This popped up a little time ago and and now is shredding

 

[Super_Blueberry]

What are we looking at? The black stuff on the sign?

 

[pleechford]

Black beard algae my friend.... Not good

 

[Jaden]

What is the best way to get rid of it

 

[Mumma.of.two]

IMO manual removal (scrub and bleach dip on things you can) and excel spot treatment.

 

[pleechford]

Pretty much just remove it by hand. That stuff is Impossible to kill

 

[Bobby56]

I read that upping the co2 will get rid of it