Seachem PhosNet 125 gm is a premium granular ferric oxide, or GFO, filter media engineered to swiftly and effectively eradicate phosphates and silicates from both freshwater and saltwater aquarium environments. Designed with high porosity, an expansive surface area, and superior binding capacity, PhosNet ensures these undesirable compounds are locked away permanently, preventing their release back into your tank.

This advanced GFO product stands out for its exceptionally strong binding capabilities, allowing it to reduce phosphate and silicate levels to nearly undetectable concentrations, outperforming many competing products. With a PO4 binding capacity of 1.41 mg/g, it offers robust performance for nutrient control. PhosNet also boasts a user-friendly, low-dust formulation, making it easier to handle and deploy. For optimal results, rinse before use and place in a high-flow area such as a canister filter, media chamber, or box filter, ideally within a filter bag to maximize water contact without tumbling.

Seachem PhosNet 125 gm is an essential solution for any aquarist battling nuisance algae fueled by high phosphates or silicates, or for those proactively maintaining pristine water quality in their reef or freshwater systems. Its strong binding and ease of use make it an excellent choice for both new and experienced hobbyists seeking a reliable, high-performance media to achieve and sustain ultra-low nutrient levels for a healthier, more vibrant aquarium.