The test is subjective. One person will read 50, another 60. It only increases if you add it to your pool.
The test is subjective. One person will read 50, another 60. It only increases if you add it to your pool.
Also, it is slow dissolving. It takes about a week for it to totally dissolve, so it may just be that when you tested and got the cya reading of 50, it all hadn't yet dissolved.
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