went and tested cya again. Its about 25... was 30 last wk. Chlorine is still way up there. Pool still cloudy. We decided to empty some of the water and refill. Hope this works. Looks so pretty blue, but so milky. REREAD why pools can get cloudy. Well it cant be algea then if my chlorine level is holding, right? So I give up. must be the ph balance is out of whack. Going to refill a little more than 1/4 of the pool then start over.