Thank you for this site TFP. Only been doing BBB for 1 1/2 weeks. My pool is super clear and sparkle! No more black ring in the skimmer.
Now I'm more aware of my kid's friends pools. I mentioned BBB to my friend who is having a problem with her slightly cloudy pool. She was shocked that I only need BBB. She is going to try it. Going over with my TF100 test kit this evening.