wrote in message
oups.com...
I think that adding the "small piece of liverock with just a hint of
coraline on it" is what one might call "seeding". Obviously the
genetic instructions for how to create coraline algae is not just going
to spontaniously form inside of biochemical machinery capable of
reproduction within a couple of weeks just because the chemistry of the
environment is hospitable to the growth of such an organism. If you
have a tank that totally, absolutly lacks any form of coraline algae
then it is not going to magically appear unless you add it to the tank,
at which point if the proper conditions exist it will be fruitful and
multiply.


You won't even get dandelions to grow unless you get at least one dandelion
seed from somewhere ;-)
Thomas Bartkus