This prevent plus clarifier returns sparkle to pool water and controls non-metallic deposits. Used regularly, it will prevent yellow, green and brown non-metallic stains and deposits while clarifying the water. Just 3 ounces treats 10,000 gallons. Improves and maintains water clarity. As a regular part of your maintenance program, prevent plus clarifier will reduce pool water, filter and surface maintenance and allow swimming immediately after treatment. Compatible with chlorine and bromine sanitizers. Applications for visible deposits, if visible contaminants/deposits are on the walls or floors, brush the affected areas thoroughly, add 4-ounce of prevent plus clarifier directly to the pool, super chlorinate by adding 1/2-pound of dry chlorine per 10,000 gallons of pool water. Swimming may be resumed a few hours after treatment (when chlorine level is below 3 ppm). Weekly preventative treatment is, establish and maintain the normal chlorine level for your pool. Swimming may be resumed immediately after treatment. Product contain 32-ounce.