Any ideas on how to remove tin other than a couple water changes?
Did you find a resolution for this?
in my experience, it tends to be related to an imbalance of cal/alk, and also can be related to Boron deficencies though your ICP rules that uot.
here is a good thread:
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When I see this, I’ve noted my strontium and boron levels are undetectable, adding both seemed to have reversed the problem over time - may be worth an icpI’m also seeing this on some of my corals (acropora). The coralites are very bumpy and a few get these blisters where the skin balloons out and detached from the skeleton. The blisters will go back down after a day or so. But the coralite structure isn’t returning to normal.
I’ve never done an ICP test but I do weekly 12% water changes with Tropic Marin Pro. Ca, Alk, Mg, N, P are always pretty dead on with N~3-5ppm and P~0.02-0.05 ppm. I have always theorized a bacterial infection and after watching several corals stall today I’m trying to dose antibiotic (Bactrim, I already have some on hand). I’m not sure if it will work or not but I have to try.