It long has been accepted that the best way to control algae growth is to limit one selected nutrient — phosphates. Our unique, patented technology — trademarked PHOSfree — effortlessly, quickly, and completely removes all phosphates from a pool’s water.

No phosphates, no algae. It’s that easy.

PHOSfree eliminates phosphates from your pool. Normal sanitizer levels will prevent algae growth. Natural Chemistry unconditionally guarantees it.

PHOSfree is effective and low cost. A typical 20,000-gallon pool with 300 parts per billion (ppb) phosphates is initially treated with a 1 liter/33.8 oz. bottle of PHOSfree by simply adding to the skimmer. The filter is operated normally for one week. PHOSfree attracts and removes phosphates from the pool water, and is removed by cleaning or backwashing the filter.

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

PHOSfree is available as part of our 3-Step, Clear Perfect Water Program. Step 1 is PHOSfree by itself, used as an initial treatment to remove most of the phosphate in a pool. In Step 2, PHOSfree is combined with Pool Perfect for easy, season-long, weekly dosing. In Step 3, PHOSfree is combined with Pool Magic Spring & Fall for complete winter treatment.

Available in 3 liter bottles; use depends on pool size and phosphate level. is changing to

We're thrilled to announce that is now transitioning to! This transformation isn't just a new name; it signifies a new partnership, and an upgraded experience with improved information and an updated web store. Aquafinity is your complete source for water quality solutions, offering an expanded array of products and services. From state-of-the-art filtration systems to eco-conscious water treatment, Aquafinity is dedicated to delivering top-tier products and backed by expert on-site services. What's more, all existing logins and user accounts will seamlessly transition to the new site, ensuring a smooth experience for our valued customers. Join us as we take Complete Water Control to a new level at!