Cyanobacteria or Red Coralline?

[Darryn Lyon]

Been keeping an eye on this red stuff on the front rock of my tank, and I had someone tell me it could be the start of Cyanobacteria, but could it also be the start of some red coralline? What do you guys think?

 

[cloak]

If it doesn't come off the rocks with ease then yes, it could be red Coralline algae.

 

[cromag27 Verified Sponsor]

Purple stuff is coralline. red stuff could be either. try and blow or brush it off the rock.

 

[Darryn Lyon]

Definitely does not come off, I think I may have gotten a tiny bit off scrubbing it with a small brush. It does not come off with ease.

 

[twilliard]

That is not cyanobacteria

 

[cromag27 Verified Sponsor]

Yup, red slime will come off easily.

 

[Diesel]

Coraline will come in different colors, I have seen green, pink, black, dark red Maroon and of course the purple.

 

[mps026]

I have the red coraline as well really pretty as long as it doesnt scrape off easily ur good

 

[Thor2j]

My wife's tank has some too. It won't come off with a brush but will scrape off with a plastic scraper. Which is it?