The best way to control algae growth is to limit one selected nutrient — phosphates. This approach was adopted nationwide by federal, state and municipal governments nearly 30 years ago to curb algae growth in rivers and lakes.

Our unique, patented Lanthanum technology effortlessly, quickly and completely removes all phosphates from a pool's water. Algae cannot grow in a normally sanitized, phosphate-free pool. No phosphates, no algae. It’s that easy — guaranteed.

Simply add PHOSfree to your skimmer and operate the filter normally for one week. PHOSfree attracts and removes phosphates from the pool water and is removed by cleaning or backwashing the filter.

Each week, add a small amount of PHOSfree to the filter via the skimmer. This removes phosphates continually entering the pool from many different sources.