I'm a new pool owner (about 2-3 weeks) and have Ben's test kit. I use BBB. My water is crystal clear & nicely balanced except for needing a tad more stabilizer. I run the full battery of tests once a week. For the past two weeks my CC has been 0.5 (or less). Given that I have more or less no combined chlorine, do I still need to shock my pool? Or do I wait until I see CC of 1.0 or greater? Thanks!