Bulk Pharmaceutical-based Calcium Chloride that mixes crystal clear with no unwanted impurities. Use to replenish and maintain calcium levels in a reef aquarium.

30 lbs will make up to 26 gallons of crystal-clear Calcium Chloride with no unwanted impurities.

2.5 lbs will make up to 2.17 gallons of crystal-clear Calcium Chloride with no unwanted impurities.

Pharmaceutical-Grade Calcium Chloride Aquarium Supplement

Reef Endurance Calcium Chloride is a pharmaceutical-based aquarium supplement 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.

• Replenish and maintain Calcium levels in a reef aquarium
• Resealable Packaging
• Mixes Clear
• No Residue
• Easy 2-Part Dosing

Stock Solution Mixing Instructions:

One liter of RO/DI + 0.1 kg (100 g) of Calcium Chloride will create a stock solution with a calcium concentration of 100 g/L.

1. Fill a one-liter container half full of RO/DI or distilled water
2. Add 0.1 kg (100 grams) of Calcium Chloride to the container with water.
3. Top off to the 1-liter mark and secure the cap.
4. Shake the solution vigorously and allow it to dissolve for 24 hours altogether.
   Tip: To ensure all calcium chloride dissolves, raise the water temperature to 77°F (25°C) and mix for 24 hours.  

Note: As an alternative, 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 10 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.