Seachem SeaGel 500ml – Carbon & Phosphate Remover for Marine & Freshwater Aquariums

Seachem SeaGel 500ml is a premium dual-action filtration media that combines the power of Matrix Carbon and PhosGuard to deliver crystal-clear, healthy aquarium water. Designed for both marine and freshwater aquariums, SeaGel effectively removes organic waste, color-causing compounds, acids, phosphate, and silicate—without leaching phosphate back into the system.

Matrix Carbon’s unique spherical bead design ensures maximum water flow and contact time while preventing channeling and compaction inside the filter. Paired with PhosGuard’s rapid phosphate and silicate removal, SeaGel provides long-lasting chemical filtration ideal for reef tanks, fish-only systems, and planted aquariums (excluding phosphate-buffered freshwater).

At Reef Freaks, we recommend SeaGel for aquarists who want reliable water clarity and nutrient control in a single, easy-to-use solution.

Key Features:

• Dual-action media: Matrix Carbon + PhosGuard
• Removes organic waste, acids, color bodies, phosphate & silicate
• Enhances water clarity and overall aquarium health
• Spherical beads allow maximum flow and efficiency
• Long-lasting performance (up to 3–4 months)
• Suitable for marine and freshwater aquariums
• Does not release phosphate into the water

Seachem SeaGel 500ml is a high-performance chemical filtration media designed to keep aquarium water clear, balanced, and nutrient-controlled. By combining advanced activated carbon with rapid phosphate removal, SeaGel offers a simple yet powerful solution for maintaining optimal water quality in both reef and freshwater systems.