Does anyone know if a water softener will remove Cyanuric acid? I have never tried it. I have always just drained and refilled. Once, I had two neighbors, one with high CYA and one with low CYA; I balanced both by exchanging the water for each until they were equal, but that was a rare opportunity.
I have called a few Water Softener Companies, but they all seemed stumped by the question. There are some water treatments that can remove cyanuric, but they would be cost prohibitive. A water softener would probably not be economical for most situations if it would work.