Where'd my red fuzz go?

[BlueAbyss]

Hmm, so something wierd happened overnight...

When I looked at my rock yesterday before lights out, there was a lot of burgundy colored coverage that had grown over the past 2 weeks. I liked it because it allowed me to see the 'pods scurrying around. There was also some red fuzz (which I've been told is evil) in spots.

So, I get up today, and turn the lights on, and sit down to wake up a bit. I glance at the tank... and notice my rock is really white. Looked like it had sand on it, covering the dark growth. I look a little closer and... whoa, all the red and burgundy stuff is gone! Mostly gone, anyhow... and the 'pods that I used to see running around all over seem to be mostly gone too, though I have noticed them slowly reducing in population anyhow. Some of the red fuzz has replaced itself with green fuzz (I noticed this change happening last weekend), but all other chunks of red fuzz is gone.

I have 2 theories... The first is that the tank has matured and the environment has changed enough to make a poor environment for 'pod and whatever kinds of algae those were. The second is that my lone tiny blue legged hermit devoured the algae over the past 12 hours (he is currently cleaning the other rock that is in there), removing the 'pods favorite home (or eating the 'pods too).

Any ideas? It's sort of disconcerting to have any overnight changes in any tank, let alone such a major change in my new reef. Should I worry? I will be doing a round of testing today to see if anything has changed, just in case.