@ Janet -- in this case, I'm not sure yet that she's been pool-stored. If she closed last year with very high CYA, and it all converted to ammonia . . . then she may be simply cleaning up the mess. What I'm not sure about is the Aqua Blast product -- I can't find out what it is, and she would have had to have EXTREMELY high ammonia to consume 100lbs of cal hypo.

@ killr
1. Get that OTO kit, like Janet told you.
2. Tell me EXACTLY what the Aqua Blast chemical ingredients are, and ALSO the EPA Est. (establishment) and product numbers are.
3. Add borax (20 Mule Team, detergent section of Walmart) 2 boxes at a time (slowly, to the skimmer, pump on). Wait 4 hours, and test pH with the OTO kit. Repeat till your pH is getting near 7.8.

For what it's worth, we find that pool store computerized strip testing is VERY unreliable. That said, this portion of the results
Free Chlorine-.55ppm
Combined Chlorine- 4.61ppm
Total Chlorine-5.16ppm
suggests that you may have closed with very high CYA last year, and ended up with sky-high ammonia this spring. Ammonia takes HUGE quantities of chlorine to clean up -- but I'm suspicious that the Aqua Blast product is some highly diluted form of 'shock'.