black algae

[uchin]

Have black algae on my rocks that are effecting some of my corals. Tried syphoning but the algae is on there good. Any recommendations before I pull the rock out and scrub.

 

[snobored]

Hmmm not really familiar with what ur describing. Pics would help

 

[uchin]

I think its caked up cyno.

 

[Troylee]

Could be a strain of cyano I have saw this in black before.... Like mentioned a picture would help greatly..

 

[uchin]

A picture would just show black patches. Its smooth.

 

[skinz78]

Is it hard like Coraline? Pic's would help.

 

[uchin]

Yes skinz. Its only on a few rocks. Wont be able to take picture til late tonight.

 

[snobored]

I would say cyano, but it could be something else, maybe a sponge even.

 

[uchin]

Not a sponge. Some of it will blow off so I'm thinking its caked up cyno. Damaged the my Miami pulling it off the rock where this stuff is.

 

[Reef Breeders Verified Sponsor]

Has to be a sponge, cyano is not much of a hard algae.

 

[uchin]

So sponges get hard? Definitely not a sponge. Did some more research and seems to be cyano algae.

 

[Reef Breeders Verified Sponsor]

They do get a little hard, more like a dish sponge than a mushy blanket like cyano.

 

[skinz78]

I am wondering if it is a type of Coraline. I have a weird type that kind of plates and is a dark maroonish to black color. When my corals grow near it it turns fluorescent orange. I'd post some pic's but I can't capture good one's of it.

 

[Raggamuffin]

chicken liver sponge would be my bet.