After 36 hrs. of maintaining Cl of 10 and 0 CC, I can see the fittings on the pool pole and (faintly) the pattern on the liner of the floor! I will be on this like glue today (test 4X, at least) and have high hopes!
Then we can deal with the high Alk etc.

QUESTION: I'm wondering if anyone can tell me what it means that my TH was blue at the outset (not turning red, then drop count to blue)....? Does this mean lots of calcium (that would make sense) or none?