Thanks to duraleigh's advice, and that of others, I've been able to move my CH reading from about 80 as of 6/13 (pool store actually tested it at 50 ) to my target of 200 a month later using 73% calhypo as my chlorination source. By 7/25, I was at 220 and switched over to bleach until my SWG became operational. It IS a slow steady process.

traugh...As near as I can tell from my logs, it took me over 10# of calhypo (some 62.4% and some 73%) to move my reading a mere 10ppm.