Ditch the Coppersafe. Cupramine is the only way I treat. It's neither chelated or unchelated, but rather the copper is bonded to an organic. Making Cupramine both extremely safe, and extremely effective. So safe, treating semi-deep water Butterflies (notoriously sensitive fish), have had no problems with Cupramine. It also has an strong resistence to bonding with other things in the tank. I've treated Cupramine with live rock and sand, and yet to notice the levels dropping from the rocks/sand absorbing the copper.