Polquat 60 to prevent algae is part of the treatment process - did you add any at any point in time?
Honestly trying to treat these problems when a drain/refill in order just throws money literally down the drain. Do the partial drain and refill first - I'd go down far enough to leave 1 ft of water in your shallow end, refill, recirculate and retest the CYA level, repeat if necessary.
Then you can deal with the staining and algae. Algae is not the end all - I know you want to swim but there is a logical order in which you must proceed otherwise you're only hurting your pocket book, KWIM?
Honestly trying to treat these problems when a drain/refill in order just throws money literally down the drain. Do the partial drain and refill first - I'd go down far enough to leave 1 ft of water in your shallow end, refill, recirculate and retest the CYA level, repeat if necessary.
Then you can deal with the staining and algae. Algae is not the end all - I know you want to swim but there is a logical order in which you must proceed otherwise you're only hurting your pocket book, KWIM?
