I've had my IG pool for about 5 years. in 2006 I discovered the other forum and the BBB method which worked fantastic. Due to a variety of issues which included an accident which left my dad with a traumatic brain injury, commuting between Texas and Arkansas every other weekend for several months, moving my parents to Texas, yadda yadda yadda, I went back to the 3 inch puck in my automatic chlorinator due to its simplicity and my lack of time to address the pool. Now things have settled in my personal life and I am ready to get back to taking care of the pool we love and enjoy. I've kept track of chlorine only for several months and, after replacing a few of the reagents in my Taylor test kit, did a full test today. Naturally the CYA number is in outer space so before I try to fix the other problems, I am working on the CYA. According to Jason's calculator (which I love) I have to replace 60% of my water to get the CYA back within working levels. That means running 9000 gallons into my pool. I've calculated the hose is putting 4 gallons per minute in. That translates, if my math is accurate, running the hose for the next 37.5 hours. Can somebody tell me if there is any other way to lower my CYA from its current level of 100 without running that much water? Also, it seems so wasteful to dump 9000 gallons from the pool, but I have no way to store that much water other than in the pool and we've had so much rain that my yard, flower beds etc don't need the extra water. Thanks in advance for your advice and thanks to Sean for starting this forum.