I am planning to do a absorbic acid treatment to remove some stains from the pool. I just opened the pool yesterday and haven't added any shock to the pool as I usually do because I know I want the chlorine as close to 0 as I can. My question is that the pool is cloudy do I need to get the water clear in order to do the treatment? If so should I shock to get it clear and then let the chlorine go down?