Seachem PhosGuard 250ml

Seachem PhosGuard 250ml is a high-capacity, concentrated chemical filtration media designed to rapidly and irreversibly eliminate phosphates and silicates from your aquarium. Formulated from spherical alumina oxide, its unique bead-shaped structure optimizes water flow and maximizes contact capacity within your filter system. This prevents unwanted algae blooms and controls silicate-driven diatoms, maintaining a crystal-clear aquatic environment. Ideal for both marine reef setups and freshwater aquariums, it locks away trapped waste permanently so it never leaches back into the water column. Engineered for hobbyists seeking professional-grade water parameters, it integrates smoothly into high-flow areas of canister filters or media chambers.