API PHOS-ZORB Phosphate & Silicate Remover is an efficient filtration media designed to keep your aquarium water crystal-clear by removing phosphates and silicates, which helps prevent algae growth and promotes a healthier environment for plants. Suitable for both freshwater and saltwater tanks, this plant-friendly, easy-to-use solution comes in a convenient 6-pack, providing long-lasting protection. Simply rinse the pouch and place it in a high-flow area of your filter, replacing it every two months for continuous maintenance and optimal results.