Product Description
Perfect for testing saltwater aquariums, reef tanks, and other marine and aquaculture applications.
Easily monitor calcium, alkalinity, and magnesium to create a healthy environment that fosters strong coral growth and development. This kit comes complete with everything you need. Watch your bold, vibrant corals thrive. Stop guessing with color charts. Get fast, accurate digital readouts in the palm of your hand with these Checkers®HC.
Easy-to-read, instant digital results
Compact and portable
Simple one-button designs and straightforward steps
Begin testing aquariums instantly to support beautiful, colorful corals
Calcium, alkalinity, and magnesium play a significant role in promoting coral growth, and proper management of these parameters is critical. Reef tank owners must control calcium levels to promote stable coral tissue and skeletal structures, alkalinity must be kept in check to ensure stable coral calcification and growth, and lastly, magnesium must be maintained to foster good polyp extension and coral coloration. Be ready for regular aquarium water checks and test confidently with our Marine Coral Care kit.
Saltwater compatible
Checkers®HC are dedicated to a single parameter
A great alternative to chemical test kits
Digital readouts appear on large LCD screens
Pocket-sized, lightweight
Easy-to-use, convenient
Requires little maintenance
Comes as a complete coral care kit
Be ready to test right out of the box with all necessary reagents, accessories, and batteries
Auto shut-off conserves battery energy
Calcium range: 200 to 600 ppm (as Ca2+)
Alkalinity range: 0.0 to 20.0 dKH
Magnesium range: 1000 to 1800 ppm Magnesium
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
Specification
Detail
Calcium Range
200 to 600 ppm (as Ca2+)
Calcium Resolution
1 ppm
Calcium Accuracy @ 25°C (77°F)
±6 ppm ±5% of reading
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
Magnesium Range
1000 to 1800 ppm Magnesium
Magnesium Resolution
5 ppm
Magnesium Accuracy @ 25°C (77°F)
±5% of reading
Light Source
Light Emitting Diode @ 610 nm
Light Detector
Silicon photocell
Calcium Method
Adaptation of the Zincon Method
Alkalinity Method
Colorimetric Method. The reaction causes a distinctive range of colors from yellow to greenish blue to develop.
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.
Battery Type
1.5V AAA Alkaline
Calcium Auto Shut-Off
After 10 minutes of non-use and 2 minutes after reading
Alkalinity Auto Shut-Off
After 10 minutes of non-use
Magnesium Auto Shut-Off
After 10 minutes of non-use
Calcium Environment
0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing
Alkalinity Environment
0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing
Magnesium Environment
0 to 50 °C (32 to 122 °F); max. 95% non-condensing
Prepared sample cuvette (sample plus reagents) must be 22 to 28 °C (72 to 82 °F)
*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)
Magnesium Interferences
Calcium below 300 ppm and above 500 ppm
Reagent Sets
HI758-26 (25 tests for Calcium) / HI772-26 (25 tests for Alkalinity) / HI783-25 (25 tests for Magnesium)
Calibration Check
HI758-11 for Calcium / HI772-11 for Alkalinity / HI783-11 for Magnesium
Warranty
1 year
