Pond PhosGuard™ helps keep your pond clean, controlling silicate and phosphate levels. Its spherical structure maximizes water flow for optimal hydrodynamics. The binding process is reversible, making it a safe, non-herbicidal, eco-friendly choice. A 2 Liter size treats over 600 US gallons for 1 to 3 months. It's the only spherical phosphate remover on the market. Available in 1 L, 2 L, 4 L, and 20 L sizes. Use Pond PhosGuard™ in your filter module for best results, ensuring maximum water exposure. Pre-wet by mixing 1 L of product with 2 L of water, to avoid any potential initial heat generation. Avoid using phosphate-based buffers and fertilizers. Get Pond PhosGuard™ for a cleaner, healthier pond!