My water was cloudy 2 weeks ago, but my test were all in line. I shocked the pool 3 times in a week, then it was clear again. I then swept the pool out, backwashed my sand filter on Sunday. It is now cloudy again and the test results are still good.
Only things i can come up with:
1. it rained both times hard before the water went cloudy ????
2. Filtration: my sand has been in the filter for over 3 years, do i need to replace the sand?
Any help would be appreciated, thanks