Hi, I have a covered hot tub on my patio. I read the "chlorine and hot tubs" article and it recommended a specific cya level before going to the liquid bleach method. I had thought that cya protected the chlorine from the sunlight though, so is the required cya level different for covered hot tubs? On another note, I just received my Taylor 2005 kit in the mail, are there any suggestions on how to color match for chlorine?? All the pinks look too similar to me!