poolrx 101067 Black Units Swimming-Pool-Algaecides (4 Pack) 20,000-30,000 Gallon and Pool RX 101001 Blue Algaecide Treats 7.5k-20k Gallons

This pool care bundle contains 4 units of PoolRx Black Algaecide for pools up to 30,000 gallons each, and 1 unit of PoolRx Blue Algaecide for pools 7,500-20,000 gallons. The Black Algaecide 4-pack provides enough algae protection for up to 120,000 total gallons, while the Blue Algaecide covers an additional 20,000 gallons. Both feature a proprietary mineral blend that eliminates all types of algae for up to 6 months while reducing chemical demand. By using them together, you can simplify maintenance and improve water quality in pools up to 140,000 gallons. Just place the convenient alloy cylinders in your pump basket or skimmer and let them work.

• Eliminates all types of algae in pools up to 30,000 gallons for up to 6 months, reducing chemical demand and simplifying maintenance.
• Algaecide pack contains 4 units designed for pools 20,000-30,000 gallons; single unit treats 7,500-20,000 gallon pools.
• Proprietary mineral formulation continuously prevents algae growth in pool water.
• Easy to use; simply place algaecide units in pump basket or skimmer and let them work.
• Ideal for salt water pools as well as traditional chlorinated pools and spas.