tan colored "fuzz"

[klongo]

My beautiful live wrong has become covered with a tan-colored "fuzz". I can brush it away, but it comes back the next day. It's probably 1/8-1/4 long and almost completely covers my rocks. My sand bed is clean, my glass is clean. I've got coralline growing on everything!- glass, skimmer, powerheads, rocks, etc.
My water parameters are: s.g 1.025, pH 8.2, ammonia 0, trites 0.01 , nitrates 0, calcium 435 and alkalinity 3.5.
I've got 30 nassarius, 10 ceriths, 10 astreas and 2 turbos, 3 peppermint shrimp, a red serpent star along with my lemonpeel, two false percs and a royal gramma.
How do I get my rock unfuzzed?

 

[tizzo]

I am NOT being disrespectful or sarcastic when I ask, "Are you colorblind??" I ask because my bro is, and to him red and brown and green are all the same color. If you are then this is an easy ID. If not then I don't know.:notsure:

 

[klongo]

no disrespect taken - my entire family is colorblind - but not me!
It's definitely tannish- light brown in color. I'm going to try to take a picture tomorrow, but I think it will just come out looking light dull, dirty rock when in fact it's pretty well covered in red coralline.