I had to replace my stabilizer after the winter, so I added CYA to 40 ppm. My pH went down to 7.0, so I looked at the Pool Calculator and then added 4 lbs of washing soda (sodium carbonate anhydrous). That was 2 days ago and my pool is still cloudy. I'm wondering if the washing soda hasn't all dissolved or if i've got calcium carbonate in suspension. I seem to remember something similar last year after adding the washing soda, and i think it cleared up in time.