copper question

[sharuq1]

I used a vinegar rinse on my 120g and a 33g (which is now a shrimp tank) both of which had Cu in them. I put the vinegar in the tank with RO and let the empty filter cycle it all night. After that I rinsed the tank with tap water, filled it with RO and used polyfilter in my canister. The tank tested 0 for Cu after that.

From reading(read it on RC) it is my understanding that Cu binds with Ca--hence getting rid of the Ca should get rid of the Cu. I don't recommend using a tank with Cu, just pointing out this method worked for me.

(Polyfilter claims to be able to filter out heavy metals from the water which is why I used it.)