I am moving into a home with a pool and started by taking a water sample to the closest pool store 2 days ago. The owners moved away 2 weeks ago and the pool was not cared for for 11 days. We've had lots of rain. I added what I was told: 4 gallons "liquid shock", 0.5 lbs. stabilizer/conditioner, and 11 of the 22 lbs. alkalinity plus called for. I was supposed to add another 11 lbs of alkalinity plus in 6-8 hours, but decided not to because I learned I probably didn't use an accurate volume estimate. I then discovered this forum and ordered a test kit (Taylor K2006) from Amazon. Here are the before...after test results from the pool store and from my new test kit 48 hrs. later:
CYA: 19...I'm going to guess 150. The black dot was no longer visible long before the level reached the first number (100).
The water looks beautiful and has since we looked at the home for the first time 2.5 weeks ago. I need to figure out how to vacuum or use the Polaris. The sides look as though they could use a brushing. I had no trouble emptying all of the baskets and backwashing. The pool service owner only opens and closes the pool but he was happy to teach me how to do everything over the phone free of charge. He instructed me to add 3 pucks to each of the two skimmers. That's how the owners were chlorinating. Is that why the CYA level is so high? I'm much more interested in using the methods in this forum than using the pucks or the pool store chemicals. My volume estimate was 30,500 gallons (using the Pentair online calculator for a kidney-shaped pool), but the pool service owner said probably 26 or 28k gallons. I found a paper in the shed from the same pool store I went to dated 2008 (3 owners ago) which had a pool volume of 18k gallons. How do I use pool math to adjust any levels if I am unsure of the volume calculation? I don't know whether to use 18k, 27k, or 30k gallons. And which results do I need to be most concerned about adjusting first?