Coralline or Red Turf?

[Lizalots]

Well I’m confused to say the least.
Tank is 7 months old. Started with white, dry rock. Only 3 corals in tank this far, I’m letting everything sit fallow in a frag tank before moving to DT. Have dosed with purple up and Kent purple algae start.
Not sure if this is coralline or red turf. It does not scrape off with toothbrush or my nail. I have algae blenny, chevron tang and Koke tang and they cannot eat it off. Snails don’t seem to make a dent either.

 

[Marine Life]

Thats

Well I’m confused to say the least.
Tank is 7 months old. Started with white, dry rock. Only 3 corals in tank this far, I’m letting everything sit fallow in a frag tank before moving to DT. Have dosed with purple up and Kent purple algae start.
Not sure if this is coralline or red turf. It does not scrape off with toothbrush or my nail. I have algae blenny, chevron tang and Koke tang and they cannot eat it off. Snails don’t seem to make a dent either.

That is Red turf or cyano. But just to be sure if you get a turkey baster you should be able to blow it off the rocks with some force. Corraline won't come off not matter what. unless you are absolutely trying to scrape it off.

 

[Lizalots]

Thats

That is Red turf or cyano. But just to be sure if you get a turkey baster you should be able to blow it off the rocks with some force. Corraline won't come off not matter what. unless you are absolutely trying to scrape it off.

Were you able to watch my video? It doesn’t brush off to scrape off with force