It will always be deal coraline algae, but new
coraline algae can grow over it the same as it does
over the rest of the rock.

Wayne Sallee
Wayne's Pets


Aroon wrote on 6/23/2007 6:35 PM:
On Jun 23, 2:39 pm, Wayne Sallee wrote:
The white is dead coraline algae

Wayne Sallee
Wayne's Pets


KurtG wrote on 6/23/2007 4:25 PM:



I've have the same thing going. It looks like somebody dipped my rocks
in frosting complete with a few drips down the side.
If it's dead, then is probably also inorganic from carbonate deposits.
This will some times happen during warming, but then I should see the
same thing on my heater.
I'm thinking it's some sort of coraline algae. It only seems to be on
certain rocks or rocks within the same location. If so, I have purple,
pink, deep red, and now white algaes growing.
I need to find somebody with a microscope, so I can take a sample and
have a look at it. Nobody seems to have one just laying around. :-)
--Kurt- Hide quoted text -
- Show quoted text -

is there anything i can do to bring it back to life?

or will this always be dead coraline?
its pretty widespread.