Hanna Marine Calcium Checker

Hanna Marine Calcium Checker® HC

Maintain optimal calcium levels in your marine or reef aquarium with the Hanna Marine Calcium Checker® HC — a fast, accurate, and easy-to-use digital tester designed specifically for saltwater systems.

Calcium plays a vital role in the health and growth of corals, coralline algae, clams, and other marine invertebrates, making regular monitoring essential for a thriving reef aquarium. The HI758 offers a reliable digital alternative to traditional colour-comparison test kits, removing guesswork and delivering precise results in just a few simple steps.

Designed for marine aquariums, this handheld checker provides laboratory-style accuracy in a compact, user-friendly format, making it ideal for both beginner reef keepers and experienced hobbyists.

Key Features:

• Designed specifically for marine and reef aquariums
• Fast, accurate digital calcium testing
• Eliminates subjective colour matching
• Compact, portable handheld design
• Easy step-by-step testing process
• Ideal for monitoring coral health and reef stability

Specifications:

• Testing Range: 200–600 ppm
• Resolution: 1 ppm
• Accuracy: ±6 ppm ±5% of reading at 25°C
• Testing Method: Adapted Zincon method

Ideal For:
✔ Reef aquariums
✔ Marine fish-only systems
✔ Coral propagation systems
✔ Serious hobbyists wanting accurate water parameter monitoring

Keep your reef stable and your corals thriving with quick, dependable calcium testing from Hanna Instruments.