It is vital to test on your CYA degree to help you establish what FC targets to work with. In case you don’t Use a SWG, CYA is typically kept between thirty and 60ppm. When you've got a SWG, CYA is typically saved amongst 60 and 90ppm (see notes). Also, if your plaster is below one calendar year outdated, it is suggested to switch again to a nyl