15,000 gal plaster in ground.
Pool is largely in the shade, and often covered with a solar cover, so I am usually adding just a few cups of bleech... keeping my FC at a steady 5.
Water is always stable as a rock. A few glugs of acid a week keep the pH right in line.
BBB is wonderful... Pool just about takes care of itself.
The only thing is that my CC is NEVER 0.
After calculating my FC, I put my 5 drops of 0003 in, and it ALWAYS turns a light shade of pink, which is disolved with a single drop of 871.
Nothing to worry about I know... Was just wondering if anyone else experiences similar.