My pool finally cleared in the last two days. The hardness reading... finally has a reading now. Three drops to change to red. The chlorine went down to about 2 in the last two days. So I added 1 gallon of 12%. I'll bring up the alk. What should I test every week... Chlorine and PH? And as long as everything looks good, I shouldn't have a problem/wouldn't have to do any further testing and do the others once a month? I'm going to order a kit on line. Where should I buy and what should I buy? My DH was all smiles (Not that I could see his smile, but know his tone well enough) when I told him on the phone. I think he gave up on me. I'm glad everything worked out.