I am hoping that I am figuring out my pool volume correctly and was hoping that someone might let me know if I am correct so that I can calculate more closer what I need for supplies. I figure it to be approx 23,000 gallons. It is 20X40 in ground. The shallow end is approx 3' 6" and the "deep end" is about 5' 6".

1 other question, in years past I have always used "smart Sticks" in skimmer baskets, but I am wondering if I really need to with the "BBB" method.