Reef Endurance Bulk Calcium Chloride, 2.5 lbs
SKU: RE-CACHL-B
- Pharmaceutical-based Calcium Chloride that mixes crystal clear with no unwanted impurities.
- Use to replenish and maintain calcium levels in a reef aquarium.
Reef Endurance
A line of pharmaceutical-grade aquarium supplements and filtration media.
Calcium Stock Solution Calculator
Calcium Dose Calculator
Pharmaceutical-Grade Calcium Chloride Aquarium Additive
Reef Endurance Calcium Chloride is a pharmaceutical-based aquarium Additive that mixes crystal clear with no unwanted impurities. Maintaining calcium within a range of 412-450ppm in reef aquaria will enable corals and other reef-building invertebrates to proliferate. For best results, use in conjunction with Reef Endurance Sodium Bicarbonate or Soda Ash as a two-part balanced regimen.
Key Features:
- Replenish and maintain Calcium levels in a reef aquarium
- Resealable Packaging
- Mixes Clear
- No Residue
- Easy 2-Part Dosing
While most of our equipment carries a one-year manufacturer's warranty, consumable products like fish and coral foods are not covered under traditional warranty terms due to their perishable nature and varied storage conditions. However, we fully stand behind the quality of every product we sell. If you experience any issues with your food purchase shortly after receiving it, such as concerns about freshness, packaging integrity, or product quality, please contact us at [email protected]. We're committed to making it right and will work with you to resolve any problems quickly and fairly.
Stock Solution Mixing Instructions:
1gal RO/DI + 1 kg (1000 grams) of Calcium Chloride will create a stock solution with a calcium concentration of 95.4 g/L.
- Fill a one-gallon container half full of RO/DI or distilled water
- Add 1 kg (1000 grams) of Calcium Chloride to the container with water.
- Top off to the 1-gallon mark and secure the cap.
- Shake the solution vigorously and allow it to dissolve for 24 hours altogether.
Note: Alternatively, add three tablespoons of Magnesium Chloride to help maintain magnesium levels.
Dosing Instructions:
1 mL of Calcium Chloride stock solution will raise calcium by approximately 25.2 ppm in 1 USG. Increasing calcium by more than 50 ppm per day is not recommended.
Tip: If you have issues raising your calcium levels, ensure your aquarium magnesium level is between 1200 and 1350 ppm.



