Can I use this old dry rock?

[Reefen]

Wasn't sure where to post this question, But I have some old rock that I pulled out of a tank many years ago, its been sitting outside on the ground for many years, my question is can I clean it and use it in my reef tank as dry rock some of it was used in a quarantine tank with copper.

 

[redfishbluefish]

I was good until you said copper. I wouldn't use it. That said, I'm sure some will say you can if you do x, y and z. You could start by throwing it in water to begin the leaching of the copper.

 

[lavoisier]

I would not use any rock that was exposed to copper if you plan to house coral.

 

[Pistondog]

Not worth the long term risk