I drained the pool last year due to high CYA. 12 months later I am having the same problems and I was recommended to drain the pool again.
The test results are:
I observed green algae and I treated with green to clear, following the instructions from the pool store with 12 hour shock. I have no seen any change in the cloudy-green water. pump has been running all day.
I find hard to believe that the pool has to be drained every year according to he pool-store manager...
Need help thanks