I have a 10,000 gallon plaster pool (12 years old) I inherited this year. I converted to the BBB method and take readings each day with the TF-100 kit - ph around 7.8.
I am having to add about 64 oz of bleach (6%) each day to keep the chlorine level up at an acceptable level (5-10). It seems each day the chlorine is almost completely used up, sometimes I can go 2 days w/o adding the bleach but it likes its daily dose.
Is this normal? How often do others have to add bleach? I was hoping to only add every 3-4 days or so...any help is GREATLY appreciated!