i have these pink disks

[strange5406]

so ive got some pink disk shaped alge growing on my glass any info on it would be alot of help.
just worried if its good or bad

 

[sureal00]

Corraline algae.Its good.People like it when it covers the rocks .

 

[SashimiTurtle]

+1 coraline algae.
Pretty on rocks, PITA on glass. It's a sign you have good water chemistry and lighting also...

 

[strange5406]

i thought it would take longer to grow coraline

 

[SashimiTurtle]

How old is your tank, what kind of rock did you start with, did you add any snails with pink shells, corals with pink frag plugs?

 

[strange5406]

this one is only 2 months old