derrick orosz
Super Active Member
- Joined
- Oct 11, 2014
- Location
- Ayr, Ontario
I have some pieces of rock from a old QT. I did use copper in that tank so the rocks where exposed to it. They rocks have now been out of water for 4-5 months sitting dry in a bucket . Would it be safe to add these rocks to my sump or will they be holding copper in them?