This new Pool Antifreeze gives you great winter protection at a lower price. Our antifreeze is concentrated so 1 quart mixed with 3 quarts of water will make 1 gallon of antifreeze that will protect pool plumbing down to -40° F. Want even lower temperature protection? Add less water. Comes with a dilution chart, so you can make the strength you desire. We recommend -40° F to be safe. Concentrated antifreeze is totally safe for swimming pool use and non-toxic. Use one gallon for every 10 ft of 1.5″ pipe. Safe for all types of pool plumbing. 100% Propylene Glycol.