- Apr 16, 2019
- 2,010
- Pool Size
- 4024
- Surface
- Vinyl
- Chlorine
- Liquid Chlorine
Well, my husband, a noob at testing, discovered I was doing my CYA test horribly, horribly wrong.
I have the Pentair kit, and I thought my CYA was 40 ppm. I taught my hubby how to do CYA, and he comes up with 100 ppm. WHAAAA...?
So we tested again. Same result. What in the world? I had just added enough the bring it up to 40! Then he showed me my error: I was reading the amount at the TOP of the plunger, rather than through the tube at the waterline!
EGADS!!! MY CYA IS AT LEAST 100 PPM!!!!!!!!
Since it's so close to the end of summer, I'm going to leave it alone. I'll be draining it below the skimmer anyway to winterize it. What puzzles me, though, is that my chlorine has been acting as if I have 40 ppm CYA all season. Target of 7 ppm, responds accordingly to appropriate additions of chlorine, even the SLAM and mustard SLAM I did worked perfectly. How can that be with such a high CYA?
The mysteries of pool chemistry. I may go ahead and order a TF-100 and test CYA against that kit. Just to see, you know. I'm going to test again with the Pentair kit and a dilute sample to see just how much I need to drain. My luck, it'll be a complete replacement...
I have the Pentair kit, and I thought my CYA was 40 ppm. I taught my hubby how to do CYA, and he comes up with 100 ppm. WHAAAA...?
So we tested again. Same result. What in the world? I had just added enough the bring it up to 40! Then he showed me my error: I was reading the amount at the TOP of the plunger, rather than through the tube at the waterline!
EGADS!!! MY CYA IS AT LEAST 100 PPM!!!!!!!!
Since it's so close to the end of summer, I'm going to leave it alone. I'll be draining it below the skimmer anyway to winterize it. What puzzles me, though, is that my chlorine has been acting as if I have 40 ppm CYA all season. Target of 7 ppm, responds accordingly to appropriate additions of chlorine, even the SLAM and mustard SLAM I did worked perfectly. How can that be with such a high CYA?
The mysteries of pool chemistry. I may go ahead and order a TF-100 and test CYA against that kit. Just to see, you know. I'm going to test again with the Pentair kit and a dilute sample to see just how much I need to drain. My luck, it'll be a complete replacement...