Why is my pool water cloudy? I have a 1 yr old IG 20,000 gl white plaster pool. I live in the NW, where the water is pretty soft. I use chlorine and an ozonator, a sand filter and the water has always been crystal clear.

Current water analysis:

pH - 7.5
TA - 120
FCl - 3.0
Ca - 275
Cya - adequate
Temp - 84 F

It started last week when I got home from vacation, shocked the pool w/chlorine and added Sodium Carbonate to bump the pH up from 7.0 the water instantly turned cloudy (albeit blue) and has stayed that way ever since. What do I do now?

Thanks,

Steve