I had a dealer run a series of tests and the cyanuric acid tested out at 150 PPM Too high. I learned, from your website, that theSmarterSpa Salt Chlorine Generator for Spas. level became too high, because of my long term use of 3″ trichlor tablets. I knew that I would have to replace 1/2 of the water and did not want to have to keep doing this, because of the trichlor tablets. So. I decided to go with a SmarterSpa Salt Chlorine Generator, that I saw, on your site. Now, I have a salt water pool and there should be no more problems, with cyanuric acid buildups. I had the cyanuric retested and expected to see a reading of about 75 PPM. Instead, I was told it was 105 PPM. That doesn’t make sense, unless one of the tests was wrong. Do you have an explanation? Loving the convenience of the salt chlorine generator. Thank you.

Of all the common tests, cyanuric acid is the least reliable and reproducible.  Most testers only read to 150 PPM, maximum.  So getting a reading of 150 PPM, does not preclude the probability, that the true reading was in the neighborhood of 210 PPM.  That would explain why the level only dropped to 105 PPM, after half the water was replaced.  For your pool, 50 PPM is good, as a maximum, based on the latest thinking.  Higher levels will mean that you will have to maintain a higher free chlorine level, in order to assure proper sanitation.  Instead of 1-3 PPM of free chlorine, you might need 2-4 PPM.  It would be in your long term interest to drop the level closer to 50 PPM, as it should help the salt cell last longer.  LaMotte has come out with a new Cyanuric Acid Test Strip, that measures from 0-500 PPM.  This is something that a dealer should have available and should use to retest all readings over 100 PPM.  I hope that this information is helpful.