strange growth.. light brown tenticals. what is this stuff?

[marcj]

I've got a light brown organism, that kind of looks like it might be some type of algae. it's kind of bugging me and it's growing fast.

this is the only pic I can take right now (cellphone pics are crap)

upper right quadrant of the rock.

I know it's not the red slime algae (bacteria)

[Elegance Coral]

It's very hard to tell from the pic. It looks kind like an anemone. If I'm looking at what you're talking about.

[marcj]

it's not a anemone.. it's more like an algae. it started very small and now it's about the size of a dollar coin, and it growing faster than ever.

[wharyat]

Does it react when disturbed?

I would say it's a sponge of some sort.

[marcj]

Originally Posted by wharyat

Does it react when disturbed?

I would say it's a sponge of some sort.

doesn't react at all. i'm pretty sure it is some type of (soft) sponge. I had a pretty large outbreak of the pineapple sponge when my tank was cycling.