I have a 13,000 gallon Intex metal frame pool, 24" round, and have been utilizing the BBB method this summer with much success until recently. I live in northeast Florida, and it has been very hot with lots of rain, so everything got out of whack. Yellow algae, high ph at 8.2, TA at 110, stabilizer at 100pm, chlorine at 2. Not knowing what to do, I went to my local pool supply store. I dosed my pool with 3 oz. of pool acid added to water then into the pool, and I waited three hours and added two gallons of 10% chlorine and Stop Yellow 1 lb. I brushed the sides and bottom of the pool, and I cleaned the filter. After 48 hours, we are to add two more gallons of chlorine. Tomorrow I plan on adding 4lbs of baking soda. I have always run an Intex salt water system before, but I have not been able to clean the cells well enough with vinegar. Muratic acid will be tried tomorrow! I have a Hayward pump and Intex sand filter, but have not been able to get them hooked up, as my other half thinks the dinky cartridge filter should be enough. I felt like a traitor buying the Stop Yellow and 10% chlorine by the way.