Thanks Ben, I was talking to my father today. He's calling me crazy with all this stuff. He's always had an above ground, 28' round. He said, he never went to stores and used powder chlorine for the whole time, 30+ years. He had a simple ota/ph tester. So, how did BBB start. Was it due to the cost of CL? Safety, or any other reason. Also, I was wondering what type of pool do you have, size, above or below, how much sun, cya level, and daily bleach consumption? I hope you don't mind answering. I lost about 20 ppm during the day, very little at night. The smell has gotten a little better. I'll keep you informed