Cyano or coralline?

[Kyle Seeley]

Noticed this starting to pop up around my tank. It has been running for about 4 months. Any opinions?

 

[Flipside]

Looks like a small amount of cyano to me.

 

[Oscar47f]

looks like Cyano coralline its always very red its more like a purple to pink color...

 

[cloak]

It looks like Cyanobacteria to me as well.

http://www.reefcleaners.org/nuisance-algae-id-guide

 

[Kyle Seeley]

Update: I just tried to scrape brush it off with a tooth brush and it's still there. Leaning more towards coralline now?

 

[sa6hir]

Update: I just tried to scrape brush it off with a tooth brush and it's still there. Leaning more towards coralline now?

It could be a bit of both! If you do have cyno you will know within a week! Because it spreads like wildfire! That's if you leave your tank lights on more then 5 hours a day!

 

[Frop]

You think the spots on the right is also cyano? (It looks like a very thin red).