Looks like your bromine and iodine are low, I dose iodine when mine was low and notice a little improvement in coral health. Bromine is a major element and may cause a problem when low, I would dose bromine if you can. It should be replenished with the WC I would think. And the high tin? I had the same results and found a stainless steel hose clamp rusting in the sump, was not in the water but the rust flakes where getting in. When I replaced them with plastic and did WC the tin dropped and now at nil.Not sure if the icp uploaded correctly but the tin is at 5.19ug/L
I found some other threads where @Randy Holmes-Farley said tin is not concerning at higher levels so I’m still kind of lost