Marine Coral Care Test Kit

Hanna Instruments Marine Coral Care Kit

• Includes: Alkalinity, Calcium, and Magnesium Hanna Checkers
• Ideal for Any Saltwater Aquarium with Coral
• Easy-to-Read Digital Test Results
• Simple One-Button Design

This bundle includes the Marine Calcium (HI758), Alkalinity (HI772), and Magnesium (HI783) Checkers plus the required reagents to perform 25 tests each.

In a reef tank, maintaining stable calcium, alkalinity, and magnesium levels is essential for coral health, skeletal growth, and overall stability. The Hanna Marine Coral Care Kit combines three of the most accurate and user-friendly digital checkers, taking the guesswork out of reef chemistry. Designed for hobbyists who want dependable results without the hassle of titration testing or subjective color charts, Hanna Checkers are a go-to testing option with less chance for user error. Each Checker features a simple one-button operation and a digital readout that eliminates the need to interpret color changes. This makes them ideal for reefers of all experience levels and especially handy for those who are color blind. 

Testing Tips:

• Always ensure the sample is free of debris before testing.
• Never rinse cuvettes with tap water or tank water. Use RO/DI water to prevent contamination.
• Use clean, dry cuvettes for every test. The outside of the cuvette must be completely dry and free of fingerprints, oil, or dirt before inserting it into the checker.
• Wipe the cuvette thoroughly using a lint-free cloth prior to testing.
• Avoid shaking the cuvette, as this can create bubbles that may lead to falsely high readings. Instead, swirl gently or tap lightly to release any trapped air bubbles.
• Do not let the reacted sample sit too long after adding the reagent, as this may affect the accuracy of the results.
• Discard the sample immediately after the reading. Leaving the solution in the cuvette can stain the glass and compromise future tests.

Specifications

Marine Calcium Checker (HI758)

• Calcium Range: 200 to 600 ppm (as Ca²⁺)
• Calcium Resolution: 1 ppm
• Calcium Accuracy @ 25°C (77°F): ±6 ppm ±5% of reading
• Calcium Method: Adaptation of the Zincon Method
• Calcium Auto Shut-Off: After 10 minutes of non-use and 2 minutes after reading
• Calcium Environment: 0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing
• Calibration Check (Calcium): HI758-11
• Reagent Set (Calcium): HI758-26 (25 tests)

Marine Alkalinity Checker (HI772)

• Alkalinity Range: 0.0 to 20.0 dKH
• Alkalinity Resolution: 0.1 dKH
• Alkalinity Accuracy @ 25°C (77°F): ±0.3 dKH ±5% of reading
• Alkalinity Method: Colorimetric Method. The reaction causes a distinctive range of colors from yellow to greenish blue to develop.
• Alkalinity Auto Shut-Off: After 10 minutes of non-use
• Alkalinity Environment: 0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing
• Calibration Check (Alkalinity): HI772-11
• Reagent Set (Alkalinity): HI772-26 (25 tests)

Marine Magnesium Checker (HI783)

• Magnesium Range: 1000 to 1800 ppm Magnesium
• Magnesium Resolution: 5 ppm
• Magnesium Accuracy @ 25°C (77°F): ±5% of reading
• Magnesium Method: Adaptation of the colorimetric EDTA method using calmagite indicator. The reaction between magnesium and the reagents causes a blue to violet tint in the sample.
• Magnesium Auto Shut-Off: After 10 minutes of non-use
• Magnesium Environment: 0 to 50 °C (32 to 122 °F); max. 95% non-condensing
• Magnesium Interferences: Calcium below 300 ppm and above 500 ppm
• Calibration Check (Magnesium): HI783-11
• Reagent Set (Magnesium): HI783-25 (25 tests)

Other Specifications

• Light Source: Light Emitting Diode @ 610 nm
• Light Detector: Silicon photocell
• Battery Type: 1.5V AAA Alkaline
• Sample Temperature Range: Prepared sample cuvette (sample plus reagents) must be 22 to 28 °C (72 to 82 °F)
• Note: Warm or cool prepared cuvettes if needed.
• Dimensions: 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5")
• Weight: 64 g (2.3 oz)
• 1-Year Manufacturer Warranty

What's Included?

Marine Calcium Checker (HI758) supplied with protective case

Marine Calcium reagent starter kit for 25 tests

Marine Alkalinity Checker (HI772) supplied with protective case

Marine Alkalinity reagent starter kit for 25 tests

Marine Magnesium Checker (HI783) supplied with protective case

Marine Magnesium reagent starter kit for 25 tests

Sample cuvette and cap (6 pcs.)

Minipipette with tip (1 pc.)

Plastic pipette (1 pc.)

5 mL syringe with black printing and tip (1 pc.)

5 mL syringe with blue printing and tip (1 pc.)

1 mL syringe with tip (2 pcs.)

1.5V AAA Alkaline battery (3 pcs.)

Instruction manuals

Marine Magnesium Checker (HI783) Quick-reference guide