Combat phosphates and maintain water clarity in your aquarium with API Phos Zorb Treats. These powerful filtration media pouches effectively adsorb phosphates, preventing algae growth and water cloudiness. Its convenient packaging makes it easy to add to your filtration system, providing lasting phosphate control for up to 210 liters of water. Specifically formulated to remove phosphate, a common cause of algae blooms, from aquarium water Helps prevent algae growth and maintain clear, healthy water conditions Easy-to-use, simply place in the filter and replace regularly for optimal water quality and aquatic life