Copper Question

[marksy15]

Does anyone know if liverock that has been in a tank once treated with any kind of copper compound will harm corals, inverts, pods or anything else if used in another tank? I have heard people say yes and no... but it's all been heresay... does anyone truly understand the potential impact if there is one?

Thanks

 

[stingythingy45]

It will leach out over time and cause problems with your corals and inverts?
I've even heard of it leaching out of silicon.
Why?

 

[smithcreek]

If you already have the liverock you could test it for copper by putting it in a container with fresh water and letting it circulate for a few days (weeks? month?) then test the water to see if it has leeched out.

 

[marksy15]

I'm going to play it safe... I'm setting up a new tank and I have a few pieces of kickass rock that were used in a cichlid tank that I wanted to use. I've caused problems for myself in the past by cutting corners and not taking all of the necessary precautions.