Help identifying algae (?) on sps frag...

[Ser Davos]

I got this acropora tricolor frag for like $5-10 because it was completely browned out with no polyp extension. It has now colored up and has good extension, and is encrusting/growing more and more. However underneath it this redish looking algae has started growing that is preventing it from encrusting downwards i think.. also green hair algae. The red algae almost looks like a fan that is split. Any clue what this is?

 

[cloak]

Gelidium?

http://www.reefcleaners.org/nuisance-algae-id-guide

 

[Ser Davos]

Looks like that may be it. Thanks!

 

[ReefWhatYouSow]

I got this acropora tricolor frag for like $5-10 because it was completely browned out with no polyp extension. It has now colored up and has good extension, and is encrusting/growing more and more. However underneath it this redish looking algae has started growing that is preventing it from encrusting downwards i think.. also green hair algae. The red algae almost looks like a fan that is split. Any clue what this is?

Hey Ser Davos.... Did you ever put this frag into your tank? And did the gelidium start to spread? I had that happen and it took a rock boring urchin's to mow (scrape) is down since the algae roots itself into the rocks.