Full copper was reached on June 13th, and things were going well, but I don't know what did the Hog in. He was typically hiding under a PCV pipe during the last few days, but today wasn't going good & he went. Can't say if it was the Copper or something else. He did have a 'slime' coming off him a few hours before going - almost like coral slime when they are stressed. Just thought to report in that my go @ the hog was incomplete.