The three treatments that we add each week (in addition to your balancing chemicals) are Stain&Scale Control, Algicide, and Pool Perfect Total.
Stain&Scale control is used to remove stain causing metals. This is recommended weekly.
Algicide 60 is a poly quat algicide, effective in controlling green, black, and mustard algae. This treatment coats pool walls making it difficult for algae to attach and spread.
Also recommended, once a week.
Pool Perfect Total is an enzyme blended with a phosphate remover. Enzymes break down pollen, sunscreens, non-living bather waste and more, which frees up chlorine to better sanitize. Using Total reduces frequency of filter cleanings and scrubbing the scum line. This is also recommended weekly.