I have a 24ft above ground & we fill to about 13500 gallons. Last year before we closed the CYA was very high. I use a Taylor K-2006 kit to test and the CYA reading wouldn't even make it to the 100 mark. We drained about 3/4 of the water before we closed last fall. So when we opened the other day we added that amount back in fresh water. I have only added one 1lb bag of calcium hypoclorite shock. After all that the CYA reading is still between 90 & 100. How is this possible after putting so much fresh water in? Do you think I am getting inaccurate test results? I don't know what to do next. Free chlorone is 5.6, pH is 8.0, calcium hardness 200 & alkalinity 120.
High CYA
- Thread starter ambrew
- Start date
Have you added any chlorine since then? Thoose chlorine tablets have cya in them. I currently have cya level of 133, just planning to keep the free chlorine higher and not use any chlorine with cya in it anymore. Hopefully it will decrease overtime. I got my cya tested at Leslie pool supply for free. I just go their for free testing don’t buy anything rarely
So you poop in the pool too ?
Just kidding. Welcome to you both.
But for real. The Leslie's machine be spitting #s out all like
Your odd of getting it right are similar.
90+ is sketchy to read. It might be 110, or 310. Sounds like it was closer to 310. We do a dilution test with half tap water and double the result when 90+.
It is what it is now, so go from there.
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maybe, maybe not. Leslie’s (and most other stores, not picking on them specifically) are very bad at that specific test. Take you water to a second pool store and see how far off of 133 it might be. Or even take it back to the same store a few hours later and don’t be surprised if there’s a significant difference.