help with cloudy water from new rock

[joshuajoshua]

Params are all normal. I added some dry pieces of rock and did a 15% water change yesterday.

I suspect the rock is what is doing this. But, I really like it so I am hoping this is temporary. The rock came out of a very old system I got for free. It is very dense and was used as "base" rock. This rock appears to be some sort of sedimentary rock.

I am attaching a photo so you can see the rock, please let me know what kind of rock this is and why it is clouding my water.

 

[joshuajoshua]

Also found a bubble tip that was in my refugium split and one half was dead and rotting. I took it out and the thing smelled like the underside of a dock at low tide. I'm thinking this may be the culprit.