- 1qt btl
Add 16 ounces per 10,000 gallons of water of normal hardness and mineral content. If the water hardness is over 200 ppm or water test has high iron, copper or manganese content (over 0.1 ppm) add 32 ounces per 10,000 gallons of water.
For preventative maintenance, add 4 ounces per 10,000 gallons of pool water once a week regardless of make up water, to take care of top up water.
Chlorine based sanitizing systems
Prevents staining and scale formation caused from mineral and metallic compounds