what's this on my glass?

[Mike-words]

anybody know what this is?

 

[Purevil21]

Coraline Algae, it is a sign of a healthy and mature tank, it's a good thing.

 

[Purevil21]

You can scrap it off if you like though, no harm done.

 

[Mike-words]

Thanks

 

[classklown90]

if thats the first sign of it youve seen then scape it off and leave the scraped pieces in the tank, they will attach elsewhere and help it spread

 

[trackfast]

if thats the first sign of it youve seen then scape it off and leave the scraped pieces in the tank, they will attach elsewhere and help it spread

+1