What is this on my rocks? algae?

[zvonmonet]

hey guys i woke up this morning and saw white spots on my rocks, not all but some and quite large spots that weren't there last night here are some pics maybe its just algae but don't think there is white is there???

 

[zvonmonet]

any 1?

 

[etepperman]

It might just be a bit of die off. It will grow over again soon.

Of it could just be some other kind of algae. In either case, I don't think it is much to worry about.

-E

 

[zvonmonet]

ok if that is soo, then its good

 

[Hocky]

It looks like coraline backing off.

 

[Ryan-UF]

It looks like coraline backing off.

I agree

 

[zvonmonet]

so what does that mean bad?? and to be honest i don't think there was any visible algae yesterday

 

[john90009]

blow the rock with a powerhead or turkey baster. most likely its cyano, if you look to the left powerhead and the rock thats beating there is no cyano algea on that rock.