Strange fuzzy? What is this?

[rogersjw]

Ok heres a picture... i just noticed last night that my 55 gallon FW w/ guppies and a pleco has a new visitor... It's a little white fuzzy "plant" than has sprouted on a couple of the rocks... It's very tiny and very hard to see as it is semi-clear. Any one know what it is or how to get rid of it?

Its white with little stems sprouting from a small base... each stem has a little ball on it. See pics attached.

Sorry for the crappy photos... I had to take the picture with my iphone because my camera wouldn't not focus on the glass... I've circled the little guy in red...

Thanks for the help!