This is my first post on TFPs, so I want to thank all of you for making this a great site.
A few patents call out the use of activated carbon to adsorb cyanuric acid (CYA) from pool water. I think this is expensive, but might still be useful to take out small amounts of CYA and at least delay/defer a drain and refill of the pool. A concern/question that I have is whether or not there are significant amounts of other substances in pool water that may also adsorb onto activated carbon that might make this method inefficient. Some of the threads on this forum refer to TOCs, for instance, and refer to some of the levels of TOCs in pool water. I assume that some to the typical TOCs might adsorb. Or, are there ways to get rid of many of the TOCs before using activated carbon to remove CYA? Any comments on this would be appreciated.