- 0203 697 3750
- support@charterhouse-aquatics.com
- 14 Merchant Drive, Mead lane, Herfford, Herts, SG137AY
- 0203 697 3750
- support@charterhouse-aquatics.com
- 14 Merchant Drive, Mead lane, Herfford, Herts, SG137AY
We've Written some documentation to help purchasing form us.
Our price match policy guarantees customers the best value by matching competitors' prices, ensuring they receive the most competitive deals while enjoying top-notch products and services.
Spend over £50 on your order and qualify for free shipping. Next day, timed and select your delivery day services available.
Our hassle-free returns policy ensures customer satisfaction by allowing easy and convenient returns within a specified timeframe, providing a seamless and worry-free shopping experience.
Our dedicated customer service team is committed to delivering unparalleled support, promptly addressing inquiries and concerns to ensure a seamless and satisfying experience for every customer.
Reef Advantage Calcium™ is a non-caustic (pH 8.3–8.6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health.
Reef Advantage Calcium™ also includes magnesium and strontium in amounts proportionate to typical utilization ratios (100:5:0.1, Ca:Mg:Sr). This allows one to maintain these two important elements while maintaining calcium. Unlike limewater (kalkwasser), Reef Advantage Calcium™ does not have a caustic pH and will not deplete magnesium. Used as directed, it will not deplete alkalinity.
Add 1 capful (5 mL) per 80 L (20 gallons*) twice a week. You can increase the amount or frequency based on growth response but do not exceed 3 capfuls per 80 L (20 gallons*) per day. Each capful will raise calcium by about 3 mg/L. HINTS: Use the Reef Status™: Calcium test kit to measure calcium. It is not necessary to exceed 380 mg/L total calcium when using this product. Color and clarity may vary between lots.
Spend over £50 on your order and qualify for free shipping. Next day and timed services available.
Learn moreWe offer flexible monthly finance options. Credit is subject to application and status.
Learn moreAs a thank you, we run the Charterhouse Points scheme. Earn points on every order.
Learn more