We had some work done on our pool and had a major algae bloom. The algae appears to be gone now but we can't keep the chlorine in the pool. Our CYA level is between 150-180. Since we are in a drought we are not allowed to drain our pool. Is there another way to lower CYA? I'm assuming since the CYA level is high that might be the reason we can't keep the chlorine in the pool?? We have added up to six gallons of liquid shock at a time (per pool company suggestion) but then it drops back to zero the next day.
We have a Tri-color dispenser and since it appears to raise CYA levels, we have shut it off. Was that the right thing to do?
Our pool is a 16,000 gallons fiberglass.
I really would appreciate any information you could provide.