One of my pools went cloudy all of a sudden, and I can't seem to find a reason why. I serviced the pool yesterday, and everything was fine. Chemistry was normal, water was clear, nothing out of the ordinary. I got a call this morning saying that the pool was cloudy to the point you could only see the second step. I got there several hours later to see a white precipitate had settled out, and the pool was only slightly cloudy. We did get a significant amount of rain and wind last night, but I can't see how that would cause the pool to go cloudy. The only other things I added to the pool yesterday was a Sequestrant called Conquest (I've never seen it turn a pool cloudy) and I put 3 vitamin C tablets on an iron stain on the bottom, but I don't think that would cause the pool to cloud up either.
The chemistry as of my visit today was as follows:
These numbers put the CSI on the low side of OK. Again, I don't see a reason it would cloud up.
The pool in question is roughly 20,000 gallons, gunite, SWG.