Seachem Reef Fusion™ 1 Tetra Filter has a red LED

Filter has a red LED light that flashes to indicate when it's time to change the cartridgeSimply add your favorite style of plants and decor

Add one part water to three parts food

Secure-mount Fittings and an optional Surface Skimmer

Keep fresh drinking water available at all times

Ul/cul approved and contains a solid state nichrome heating element

Seachem Reef Fusion™ 1 Tetra Filter has a red LEDProvides 100,000 mg L of ionic calcium Restores and maintains alkalinity Most concentrated two part system; simple 1: 1 ratio Reef Fusion 1 and Reef Fusion 2 are the foundation of a system formulated to provide the essentials for the reef aquarium. Reef Fusion 1 provides calcium, while Reef Fusion 2 provides alkalinity. When used together, the Reef Fusion system will maintain calcium and alkalinity levels. Reef Fusion 1 provides not only 100,000 mg L