Seachem Reef Advantage Calcium 1kg – Reef Calcium Supplement

Seachem Reef Advantage Calcium 1kg is a high-purity, non-caustic calcium supplement designed to restore and maintain calcium levels at natural seawater concentrations. Calcium and carbonates are essential for coral skeleton formation, and maintaining proper levels is critical for sustained coral growth and reef stability.

Unlike kalkwasser or harsh calcium additives, Reef Advantage Calcium has a safe pH range (8.3–8.6) and will not deplete magnesium or alkalinity when used as directed. It also contains magnesium and strontium in natural utilisation ratios, helping maintain balanced reef chemistry while dosing calcium.

The 1kg size is ideal for medium to large reef aquariums or long-term calcium maintenance programs.

Key Features:

• Non-caustic ionic calcium supplement (pH 8.3–8.6)
• Restores calcium to natural seawater levels
• Supports coral growth and skeletal development
• Includes magnesium & strontium in natural ratios
• Will not deplete magnesium or alkalinity when used correctly
• Safer alternative to kalkwasser
• Suitable for reef aquariums with SPS, LPS & soft corals
• Dry powder for accurate and flexible dosing
• Ideal for long-term reef maintenance
• Large 1kg pack for consistent dosing

Seachem Reef Advantage Calcium 1kg provides a safe, effective, and balanced way to maintain calcium levels in reef aquariums without risking pH spikes or magnesium depletion. Its non-caustic formulation and inclusion of essential trace elements make it an excellent choice for long-term coral health. Available now at Reef Freaks.