Seachem PhosGuard is a high-capacity and highly efficient filtration product designed to rapidly remove phosphates and silicates from both marine and freshwater aquaria. By targeting these key nutrients, PhosGuard effectively helps control and reduce nuisance hair algae while promoting enhanced coral growth. Unlike competing products that can leach phosphates back into the system, PhosGuard binds them irreversibly, ensuring a cleaner and more stable aquatic environment.

This filter media features a unique bead-shaped design that allows for optimum water flow characteristics, preventing clogging and ensuring maximum contact time. Its exceptional porosity provides a massive surface area for enhanced adsorption capacity, with a working ability to remove 20 to 60 mg/L of phosphate in a 100-gallon system. Each liter of PhosGuard is capable of treating up to 300 gallons of water and can be used continuously or intermittently as needed to maintain ideal water parameters. It is not recommended for use in phosphate-buffered freshwater aquariums.

The 20-liter bulk size of Seachem PhosGuard is the perfect choice for professional aquarium maintenance services, public aquariums, fish stores, or advanced hobbyists with very large systems or multiple tanks. It offers a cost-effective solution for those who consistently battle high levels of phosphate and silicate, which are common causes of persistent algae issues. For aquarists seeking pristine water quality and a thriving reef ecosystem, this large quantity provides a long-lasting and reliable method for nutrient control.