I've been slimed!

[kimmysue]

Background: I have a 75 gallon tank with 80lbs live sand, wet/dry filter, canister filter and uv sterilizer. My chemical levels were all at zero until I developed "snow" in my tank. Thanks to this forum, it was diagnosed as poor circulation, a point my LFS agreed upon. We are buying a powerhead this week to solve the problem. The LFS tested my levels last week and said all my readings were perfect except for trace nitrites. I decided it was time to aquascape.
Problem: I added 43 lbs of dead rock last week. A couple pieces of my dead rock have developed what looks like clear to cloudy white slime on it, especially in grooves. The slime runs over into my sand in one place. My levels are as follows: ph 8.2; nitrates 0; ammonia 0; salinity 1.022-1.023; nitrites .1. The two pieces of rock affected do have a yellowish green residue on them in a couple of places.
Questions: What the heck am I dealing with? Do I have anything to worry about or fix?
I was hoping to buy my first two fish this month, but don't want to do it until everything is perfect. PLEASE HELP ME!

 

[who dey]

gotta pic kimmy

 

[kimmysue]

I tried to post a photo, but the file is too large. I'm having problems locating the camera's manual. I'll post as soon as I can figure this camera out!
By the way, I am a former Cincinnati resident and still root for the Bengals and Reds! :cheer:

 

[who dey]

bengals forever, reds never!!!! try resizing your jpeg image to 500x500. site wont allow pics any bigger than that :joy: where in the nati didja live!!???

 

[kimmysue]

My camera won't let me change the size to anything smaller than 640x480. The slime-like stuff looks similar to clear jelly, or clear jelly with stuff around it that looks like that cotton-like sac spiders use around their eggs. The stuff that came on the rocks can best be described as looking something like gold moss.
I lived in Milford for 10 years. The Bengals went to the superbowl during my junior year in highschool.

 

[kimmysue]

I finally figured it out using photo software. I hope it is clear enough. :joy:

 

[kimmysue]

I uploaded one more photo hoping that it will help anyone diagnose my problem! :needhelp: The rocks were bone dry when I purchased them. Do you think it is old dead stuff that should have been removed, or am I dealing with something more sinister? Should I roll up my sleeves and scrub off this gunk or is it harmless? Any ideas what I am dealing with?

 

[ophiura]

Bone dry as in terrestrial? People sometimes sell "holey" rock or something that is old reef material from long ago but is harvested inland. Could some of that greenish yellow stuff by like lichen or something?

 

[kimmysue]

I'm not sure. The rock were in a box and the LFS said that they could be used for a Freshwater or Saltwater aquascape. They were filthy (dirt) when I got them home and had to soak them overnight, then rinse them very well before putting them in the tank. They were $2.50 a lb and are quite heavy. I liked them because they have odd shapes, nooks and crannies for fish to hide.
The odd thing about this rock is that when the sunlight hits the tank for a few minutes in the afternoon, some of the rocks glow green. Once normal light or my hood's light are on them, they are brown again. I'll post more photos of the rock if it will help!

 

[kimmysue]

Right side of my tank

 

[kimmysue]

Left side of my tank