Bright orange and black stuff growing on live rock. Any idea what it is?

[Devon93274]

 

[jsker]

It is a type of coraline algae, reading around some other blogs.

 

[Devon93274]

.

It is a type of coraline algae, reading around some other blogs.

Hmmm, looks as if my purple algae is going to over power it. Too bad, I kind of like it. Would there be a way I can get it to spread, before the purple covers it?

 

[jsker]

That is a good thing, that means your lights are working

 

[cj in sac ca]

Speaking of coraline I can not get mine to grow " purple" that is but I do have a satin finish that doesn't scrape easy and it's red. I dose purple up but can't seem to get my purple to grow. Any suggestion are greatly appreciated

 

[Alanc425]

Usually I only see orange coralline when it is dying/dead.

Keeping all your parameters stable, bump calcium to 450 and mag to 1350-1400, higher actinic light % and your purple coralline will grow like wildfire