First time pool first time on a web support but your page came highly recommended. Pool has been in for about 3 weeks and I tested the water last night and the CyA is in the 0 category and I wasn't sure if I needed to increase the chlorine generator or not - the FCI, Alk, and pH are in the ok category? The generator is currently set at 20% for the sanitizer output. If I need to increase the sanitizer output, how long do I keep it at 40% before I turn it back down to 20%. Thanks in advance for the help.