Reef Advantage Calcium

Introduction

Reef Advantage Calcium is a non-caustic, optimized ionic calcium supplement formulated to restore and maintain calcium levels equivalent to those found in natural seawater. With a balanced pH range of approximately 8.3–8.6, it safely supports coral skeletal growth without drastically altering aquarium chemistry. Since calcium and carbonates are essential for coral development, maintaining proper levels is critical to prevent halted growth and declining coral health. Reef Advantage Calcium also contains magnesium and strontium in a balanced ratio (100:5:0.1, Ca:Mg:Sr), helping maintain these vital elements alongside calcium. Unlike limewater (kalkwasser), it does not have a caustic pH and will not deplete magnesium or alkalinity when used as directed.

 Key Features

• Non-caustic ionic calcium supplement

• Maintains natural seawater calcium levels

• Balanced pH (approx. 8.3–8.6)

• Includes magnesium and strontium in ideal ratios

• Supports strong coral skeletal growth

• Will not deplete magnesium or alkalinity when used properly

 Product Specifications

• Brand: Seachem

• Product Type: Calcium Supplement

• Form: Ionic Calcium Blend

• Ratio: Ca:Mg:Sr (100:5:0.1)

• pH Range: ~8.3–8.6

• Aquarium Type: Marine / Reef

 Recommended Use

• Restore and maintain proper calcium levels

• Support SPS and LPS coral growth

• Maintain magnesium and strontium balance

• Prevent calcium deficiency in reef systems

• Use as part of a complete reef supplementation program