HASA 78121 1 qt Bottle Phos Out Plus 12 per case. Phos Out Plus is proven to eliminate phosphates from sources such as fertilizers, cleaners, pool chemicals, and other pollutants. Phos Out Plus is non-toxic and 100% safe for your family and the environment. Phos Out Plus' concentrated formula will remove up to 10,000 ppb of phosphates per quart per 10,000 gallons of pool water. NOTE: It is normal for Phos Out to cause cloudiness. Adding 1 ounce of Eco-Safe Water Clarifier will clear the water quickly.