Thanks Janet - good post.

Mag, you need
1. Reliable testing, particularly of CYA and chlorine levels.

2. Unless you want to drain and refill, you will need DPD-FAS chlorine testing (= K2006 testkit, which is NOT available locally!)

3. To buy 6 boxes of borax, and start adding them, 1 box per 10K gallons, SLOWLY to the skimmer, pump running, every 2 hours, till your pH is above 7.2

4. To read the Best Guess page, also linked, so you can understand how CYA levels must be related to chlorine levels.


Here the test kit links. If you get the HTH at Walmart (you can check local stock online) you'll STILL need the K2006, because the HTH kit only has the OTO test. Getting both is a a good idea, since the OTO test gives you a cheap and quick test; and the K2006 will give you accurate chlorine measurements at the high levels require by your CYA (stabilizer) level.