Red algae? Rusty red color, may be a few strings/hair? OR just coralline?

[BigMikeFlipz]

Curious if this is just coralline algae starting on my rock or if it is some other red colored algae/problem. It is a rusty red color and appears mostly flat but I see a few strings/hairs in one spot (2-3 is all I can see and they are very short/hard to see). A few of the pics have a greenish/brownish tinge but that is from the camera, not really seeing the green in person.

Not overly concerned, but if it is coralline I'm a bit surprised as I didn't expect it to start so quickly on this tank. The rock is all true live rock from my LFS, and I used carib sea live sand too. The tank cycled within the first 48 hours, and is now 21 days old. I added 2 clowns on day 4. Ammonia and Nitrite has stayed zero since day 2, Nitrates were around 2 and went up to 5/6 range over the last few weeks, pH was around 8 a week ago. It all started on one rock about day 15 and has a small start on the rock next to it.

Not freaking out for sure, but want to be sure I'm not assuming everything is good and it be some random rare crazy problem.

 

[Spare time]

I'm pretty sure that's just the coloration from the artificial rock

 

[BigMikeFlipz]

I'm pretty sure that's just the coloration from the artificial rock

It wasn't that color on day 1, it is spreading. Started on one rock and has begun covering the other rocks, most visible on white areas where I chipped or shaped the live rock.

 

[Spare time]

It wasn't that color on day 1, it is spreading. Started on one rock and has begun covering the other rocks, most visible on white areas where I chipped or shaped the live rock.

Ah ok I see what you mean now. Does it blow off easily? It's hard to tell as it could be a few things and it's hard to tell from the pic as the rock is so colorful

 

[BigMikeFlipz]

It actually does blow off pretty easily in the thick areas. I used a turkey baster and blew around and a good bit came off into the water. It is one area where I don't have as much flow. Is it just a normal cyano breakout?

 

[Spare time]

It actually does blow off pretty easily in the thick areas. I used a turkey baster and blew around and a good bit came off into the water. It is one area where I don't have as much flow. Is it just a normal cyano breakout?

Yeah if it's just red and blowing off easily then it's probably cyano. Just keep nitrate detectable and phosphate below 0.1 ish and you'll be fine.