Water mixed.
As of 2/2/19 water looks good and J's toilet reservoir has no signs of iron accumulation around Clorox tablet. Will next scheduled resin regeneration result in continued clean water or will it leave water with iron residue? This regeneration should occur around 2/4/19 or so, say Monday or Tuesday. So, I'll be checking every day, but by next weekend I should have a decision/results 2/9/19.
If a problem resurfaces should replace resin, clean valve, and review status of check valves. If it looks like trouble early I'll order resin right away. Should it be fine or regular mesh?