Yet another: what is this algae?

[maxberter]

I was thinking/hoping this was coralline, but now I'm thinking maybe red turf algae. Thoughts?

Does not come off with a toothbrush. Green and red as pictured. I am not sure if it starts green and turns red, or is separate species...

Seems very slightly "fuzzy" in appearance, I think.

Tank is approaching 6 months. Have added snails, but no live rock or coral.

Just added light recently. Was there prior, but is accelerating with the lights on.

 

[blaxsun]

Looks like coralline to be honest (it comes in various pink, red and purple shades).

 

[blecki]

Absolute crap shoot what will hitchhike in and take off if you never seeded any live rock (Not wet rock with bacteria; real live rock with critters in it). But coraline shouldn't be fuzzy and usually has a visible 'leading edge'.