Long overdue update. I had what shall be known as the magnesium incident of 2024. I'm sure I mixed a dosing jug with magnesium acidentally, but I had to empty all the containers and started over and did several large water changes. I hadn't been testing [so complacent!] until the bleaching really escalated. I made it out of this pretty well, but it was quite a set back. Icp confirmed I was back on track after. The damage was variable and the tang is scarred. The corals that survived are coming back now with new margins of growth at the edge of the bleaching.