I started a triton style system in July which I’ve thought was doing well until I started adding corals from my frag tank. One by one the corals died in random ways, from base up, tips down, and random stn. I few of my acros were doing ok but not great. I finally did an Icp which revealed my Aluminum was 206! Not sure why aluminum in the tank. No metal in the water. I was using marine pure blocks which I have since removed. Triton recommended Rowaphos to bind Al. Also have done about 25% water change. It has been a few weeks and corals were looking too bad so I moved them back to frag tank. Awaiting new Icp results from coralvue. Has anyone noticed Al killinging corals?