Using the pool calc. and Test Kit 100, SWG
Borate 15 I have not added any, just what water tests
I have very hard water for fill. Lots of build up on blue glazed tile waterline. At the start CYA was 20, and CH was 450+. I drain some and add water frequently. I am not sure how to bring the calcium hardness down, it's in the fill water. Using the calculator I brought the CYA up, used less that calculator recommended and went past 80. I see a slight yellowish brown green tinge on the sides, I brush and some goes away. I did follow the shock steps as recommended here and sides improved somewhat but appears tinged. I brought up the CYA to help the ph as pool has full sun (Houston) and water up till now has been warm. Should I start BBB now, or do you have recommendations. Sorry I jumped around just not sure of the order to make corrections. The test kit and calculator are great hand holders.