Not sure if this is the right place to post this, plz correct if not. So I have a 40 breeder with a cheap diy stand and a Marineland bio wheel rated for 80 gallons as my quarentine tank. I never used copper in it. I am looking to down size to a 20 long. I would like to trade with someone looking to upgrade. Unfortunately my wife's love for guinea pig is overrunning my tank area.