Rock Food?

For Live Rock, if you want to promote growth of Coralline algae, you can add
a product called PURPLE-UP. It does work; just not over night, it takes some
time. Once the Coralline begins to grow.. watch out, it will also grow on
your glass. You will need a razor to remove it.
"StringerBell" wrote in message
...
hey people.

Got the rock in---Pretty cool.

I know this sounds kind of stupid--but---
Now that its there---Am I supposed to "feed it" something?
If there is stuff dying on the rock, and bacteria eating that, isnt there
something I should be adding to the water to feed the stuff thats still
alive in the rock?