Measuring Cyanuric Acid - can this help?

[smallpooldad]

Ok lets split the difference - hard to differentiate. You are right about washed out, it maybe a poor choice of words. But as of yet the chemical question is not answered. Oh and I got it from doing repeated tests with a new Taylor kit eg. below 30, about 32, possibly 35, etc. It could be, as you stated, that it is not the FC, it might be something else but I believe I read somewhere in the forum higher FC makes it more difficult to get a true reading this is certainly true when doing a hardness test.