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PoolDoc
04-10-2014, 04:42 PM
+ Here's an approximate OTO chart, for off scale results:

https://lh6.googleusercontent.com/-tq13B9mOkQ8/U0b_GIcHvjI/AAAAAAAAG04/sx8Yadz6s6E/s389/OTO-rev%252001.jpg

It sounds like your chlorine may be in the 30+ range; if so neither your pH nor DPD chlorine test results will be valid.

+ The test block you photographed is from a K2005 kit, not a K2006. You need a K-1515 kit to make up the difference.

+ Please test and report your CYA (stabilizer) level.