I'm beginning to wonder if the CYA level is somehow dropping more rapidly in pools in really hot climates like Texas. A friend of mine has been using pucks to chlorinate his pool for years. He does the standard weekly shocking treatment with some pool store product. Recently he had a very bad algae breakout and the pool turned green in a couple of days. All he evers measures is Chlorine level and PH. He didn't even know what CYA is. I figured I would use the opportunity to help educate him on the effects of high CYA. When I tested his pool, his CYA level was 60. This is a pool that is open year around with pucks used for sanitizing 24-7.
In my own pool in Houston, I use bleach primarily but also use pucks when I'm out of town. This spring my CYA level was low and I used a lot of pucks while my CYA level rose. However, it didn't rise nearly as fast as the Pool Calculator said. I bet I added 30 pucks over the course of the spring and my CYA rose about 20PPM.
Is there any information of other potential ways CYA could drop?
In my own pool in Houston, I use bleach primarily but also use pucks when I'm out of town. This spring my CYA level was low and I used a lot of pucks while my CYA level rose. However, it didn't rise nearly as fast as the Pool Calculator said. I bet I added 30 pucks over the course of the spring and my CYA rose about 20PPM.
Is there any information of other potential ways CYA could drop?