Seachem Reef Advantage Calcium 250g – Coral Calcium Supplement

Seachem Reef Advantage Calcium™ is a high-quality, non-caustic calcium supplement formulated to restore and maintain calcium levels found in natural seawater. Designed specifically for reef aquariums, it supports healthy coral growth by providing bioavailable ionic calcium without disrupting pH, alkalinity, or magnesium balance.

Unlike kalkwasser, this advanced formula maintains a safe pH range (8.3–8.6) and includes magnesium and strontium in natural utilization ratios. Regular use helps prevent calcium deficiency, promotes skeletal growth in corals, and supports long-term reef stability. Trusted by reef keepers worldwide, Reef Advantage Calcium™ is ideal for beginners and advanced aquarists alike.

Available now at Reef freaks.

Key Features:

• Optimized ionic calcium for reef aquariums
• Non-caustic formula (pH 8.3–8.6)
• Supports coral skeletal growth and health
• Includes magnesium & strontium in natural ratios
• Will not deplete alkalinity when used as directed
• Safer alternative to kalkwasser
• Suitable for continuous or manual dosing
• Ideal for SPS, LPS, and soft corals

Seachem Reef Advantage Calcium 250g is a professional-grade calcium supplement designed to maintain optimal calcium levels in reef aquariums. Its balanced, non-caustic formula ensures consistent coral growth while preserving water chemistry stability. A must-have for serious reef hobbyists looking for reliable calcium management.