Whitish grey fuzzt stuff growing on decor

[88GT]

I found a stick that looked cool, so I cleaned it up and pressure washed the crap out of it. Set up a 125 and put it in a week ago. Today I noticed the stick has some fuzzy stuff on it in several places. Do I need to panic, or it this a type of agae?
The fish seem to be perfectly healthy. In fact they look flawless in every way

 

[aquariumguy2300]

If it's green, it's probably hair algae. Nothing to worry about if its green. If it's brown, it might be mold, and you should take it out immediatly.If it's blue-ish green, it's not hair algae, and it's another type of mold.

 

[88GT]

If it's green, it's probably hair algae. Nothing to worry about if its green. If it's brown, it might be mold, and you should take it out immediatly.If it's blue-ish green, it's not hair algae, and it's another type of mold.

It looked greyish white, and took it out shortly after posting just to be safe.