I was helping my friend out who runs a campground in NY State. He wanted to switch from a chlorinator to a SWG system. So I found the system he wanted and gave him a good price. I told him about keeping his stabilizer higher than normal and keep an eye out for the pH level to creep up. He then mentioned that he can't add Cynauric to the pool as it is against the law since it's a public pool. Anyone have any idea if this is true or how to look it up? I thought this was weird since he was using a chlorinator and as far as I know the only chemical that you can put into them is Tri-Chlor which contains stabilizer. By the way the area is Ovid, NY just in case there are state laws and local laws that overlap.