That's really sad to hear. I'm sorry for your loss. In hindsight do you think the recommended aditional minerals was enough to cause the crash or do you think it was some other contamination. I talked to someone else who had the same thing happen but they only added a small amount of minerals. Not near enough to kill anything but their tank crashed as well.I am the guy who had a nice looking tank and growing healthy corals and sent in a icp that stated low on a number of elements. Went and dosed the elements and saw a very sad result of numerous corals perishing sadly as many were grown from small frags and were a couple years old. No more icp tests for me!! Water changes only.