Thanks
@SudoGeeks and
@Randy Holmes-Farley sounds like they would help with tin. I was reading a couple other threads and they all more or less suggested metasorb although it said it usually worked for tin, zinc not so much. In fact, not a lot I found said it specifically addressed zinc which is my highest elevated metal. Not even sure how it got into the tank although someone suggested hand lotion.
RI/RO results are ok although high silica being reported at 32.02 µg/l.
In any case thanks. I am making some water can at least do that. I'll also probably order metasorb, assuming it is safe for mixed reefs and fish, and see if that can also help. Let it ride out for a week, take another water sample and send it off to ATI and see what happens. Their results suggested 3 water changes anyway and I've not done one yet other than a smaller one to correct the salinity.