HASA 78141 1 gal Bottle Phos Out Plus 4 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.