One other oddity in my experience. Prior to adding the chlorine neutralizer, the test strip was deep purple and the OTO dilution (even at 10%) was orange in color. After I put the neutralizer in, test strip was white and OTO was clear (maybe a faint, faint yellow).

After waiting a few hours, the results were again the same and I figured I used too much neutralizer . I decided to start over and added .25 gal of 10% HTH chlorine. According to bleachcalc, that is an increase of 3.3 ppm (assuming the neutralizer in the water is done neutralizing). Well the strip is right around 3 ppm, but the OTO is off the chart, deep yellow, even at 1:2 dilution (but not at 5:1).

Anyway, thanks Waterbear for the quick and insightful reply.

Lance