I am in the process of draining my pool due to very high levels of calcium. I am starting over with the BBB method. I am trying to calculate accurately the volume of my pool. It is rectangular with the 45 degree angles cut at the corners (making it less than rectangular). It is 32 inches deep in the shallow end and 8 feet in the deep end. It is an 18 x 36. I have calculated about 25,000 gallons for a rectangular pool. Also the deep end walls do not drop straight down but the all slope in towards the center. I don't know if this is normal or not.
My question is how much should I deduct for the corners? Should I deduct anything for the sloping walls.
Thanks for your help. I am sure I will back here a few time in the next week with questions on getting started.