Hello from Surrey, England.
I have an endless pool which was installed almost a year ago.
I have been generally lucky with the water and until 2/3 weeks ago I could get it clear if it went a little cloudy.
I also managed to remove combined chlorine successfully in the summer.
Now, I cannot get the water to look pleasant at all.
It is cloudy. Also any chlorine I put in seems to instantly vanish.
I suspect that I will have to drain (or partially drain) the pool.
If this is your recommended advice. Is there anything I need to do when adding new water? and how can I prevent future problems?
Any advice would be welcome.
Ph is 7.2
Alkalinity is 110
Free Chlorine 0
Total Chlorine 0
Calcium Hardness 230
Cyanuric Acid 90 (I think this may be a major part of the problem)
I use a Taylors test kit which I understand to be one of the best.