In The Swim Super Stain Away can be used on all types of pools for the prevention of stains as well as for pool calcium build up prevention.

Compare Super Stain Away to Super Sequa-Sol® by GLB.
Super Stain Away prevents stains, scaling and build-up caused by metals and minerals.
This pool stain prevention formula will also prevent water discoloration caused by oxidized metals.
Super Stain Away will even lighten some existing stains.
Ideal for use in swimming pools using well water or in areas with heavy iron content.
Regular use will help to maintain a beautiful, stain-free pool.
Super Stain Away can be used on all types of pool surfaces.
Economically priced!
Initial dosage = 16 oz. per 10,000 gallons.
Weekly dosage = 2 oz. per 10,000 gallons.

In The Swim - Super Stain Away for Swimming Pools, 1 qt.