Green algae on rock

[jeremywe]

I've got some green stuff growing on the skeleton of my bubble and the rock attached. When the lights are on, it seems to produce little bubbles ..

Attached is a pic of it. See the green patch above the bubbles.

I was wondering if they are harmful and if i should remove them. Also, if i have to remove them, how should i do it?

Thanks!

[Fuzzy]

If you're talking about the star shaped polyps.

I believe that's Clavularia, I actually _paid_ money for a rock of this coral from GO, and you got it for free

They only come out when your lights are on right?

I don't think you have a problem, the bubble will probably sting the heck out of the poor guys if they get too close to it,

your problem will be how to keep the bubble away from these cool polyps

[jeremywe]

If you're talking about the star shaped polyps.

I believe that's Clavularia, I actually _paid_ money for a rock of this coral from GO, and you got it for free

They only come out when your lights are on right?

I don't think you have a problem, the bubble will probably sting the heck out of the poor guys if they get too close to it,

your problem will be how to keep the bubble away from these cool polyps

Thanks Fuzzy for your help once again.

Its not the GSP that i was referring to. BTW, i am looking to sell that piece of GSP if anyone is interested. PM me to offer. Its a nice piece... just the mat with a small rock at the top left for attaching to your LRs in the tank.

I've attached another pic with a circle to the algae in question.

[yikai]

if the bubble coral is covering the skeleton entirely and no healthy skeleton is exposed, it is ok. i believe the algae is growing on the outer skeleton and not the inner skeleton where the flesh is covering? if its just outside, its ok. but if the algae grows on the inner skeleton, it means that part of the bubble has pulled away from the skeleton and left it exposed for the algae to grow on.

if the algae only growing outside on the unfleshy part, u can scrub it or leave it alone i dun think it is a concern. but if it is growing on the skeleton that was once covered with healthy tissue, it can grow and take over the coral.