Just got my first ICP test back. My corals are all doing good, better than ever I’d say. But there are some major issues. I don’t see where any possible corrosion could come from, and all magnets are intact. Could aluminum be increased through the use of PhosGuard? I use it but not for a couple months now. I also added a small bag of CupriSorb a few days before I sampled the water, not sure if that might help?