I am using the kit that was here at the house already, it is probably a cheapie. There is 6 different types of drops to add. The chlorine level was so low that it did not change color really at all. The 6th drops on the alkalinity test was the drop that made it steady, the 5th drop needed a little extra help so I went with 6 drops. I'm not sure what the CYA test is. I did not see that one on the instructions. I did go purchase a whole lot of chlorine bleach and the 20 Mule team stuff and I'm awaiting further instructions!