White spots on my rocks?

[whoopper]

Hi ..

Sorry,I didn't have a photo but i will try to explain. For a few weeks i have been looking my rocks and white spots like paint drops appears on it. What can it be?

[Blown 346]

That could be anything. They could be sponges, tube worms, dying corraline algae.

[dclaghorn]

Hi Whooper, I've had the same thing, only on my glass. I don't have any coralline though...

[an411]

Its dead coralline. It will become normal coralline eventually

[julianp]

I had white spots (maybe 1/6" across) showing up on my glass and such a while back. If they look curled up... the best way I can think of to describe it is a tiny white "croissant"... which is what mine looked like, I was told they were essentially build up from the result of overly nutrient rich water (which mine certainly is being a FOWLR with lots of messy fish).

[Blown 346]

Originally posted by julianp
I had white spots (maybe 1/6" across) showing up on my glass and such a while back. If they look curled up... the best way I can think of to describe it is a tiny white "croissant"... which is what mine looked like, I was told they were essentially build up from the result of overly nutrient rich water (which mine certainly is being a FOWLR with lots of messy fish).

you are describing a Spirorbid polychaete filter feeder which is harmless.

[MTB]

Something like these...?

http://www.melevsreef.com/id/black_stomatella.html

[Mr.J Rocks]

They can either be flat worms or glass feather dusters. If they appear to flat worms, don't worry b/c my moms friend is amarine biolgist and he told me that those ones are okay.