The Hanna Marine HI758U Calcium Checker® bridges the gap between simple chemical test kits and professional instrumentation, giving you accurate results for your saltwater aquarium in the palm of your hand.
Many test kits on the market today rely the human eye to judge and determine color changes, which are notoriously difficult to use, especially in the lower ranges. Many professional instruments offer great accuracy using technology, but are not affordable to the average aquarist. The Hanna Marine Calcium Checker® HI758U bridges the gap between simple chemical test kits and professional instrumentation, using a fixed wavelength LED and silicon photo detector to provide the accuracy of professional instrumentation at the affordable price of a chemical test kit.
The Benefit of Testing for Calcium
Calcium is an essential ingredient to a healthy and functional reef aquarium. Corals and coraline algae require calcium for calcification and growth, so much so that an aquarium stocked with these organisms require regular calcium supplements in order to maintain healthy levels.
A variety of commercially available supplements exist, from calcium salts to buffered calcium supplements, which raise both calcium and alkalinity. Many aquarists set up a regular supplementation schedule to maintain proper calcium levels. However, regular calcium monitoring is crucial to a healthy reef aquarium, even if such a system is in place. This is because as corals and coraline algae grow and mature, their requirements for calcium tend to increase. As a result, the growth of the aquarium might outpace the calcium supplementation regimen.
The ideal range for calcium in a healthy reef aquarium is between 380-450ppm. Values below 380ppm may slow the growth of corals, whereas high levels of calcium (>500ppm) puts the tank at risk for calcium carbonate precipitation (limestone formation).
|Range||200 to 600 ppm|
|Accuracy @ 25°C/77°F||±6% of reading|
|Light Source||LED @ 610 nm|
|Light Detector||silicon photocell|
|Method||adaptation of the Zincon method|
|Environment||0 to 50°C (32 to 122°F); RH max 95% non-condensing|
|Battery Type||(1) 1.5V AAA|
|Auto-off||after ten minutes of non-use|
|Dimensions||81.5mm x 61mm x 37.5mm (3.2" x 2.4" x 1.5”)|
|Weight||64 g (2.25 oz.)|
HI758 Calcium Checker is supplied with:
|Warranty||1 year limited warranty|
Hanna Instruments USA Aquarium Supplies
Hanna Instruments is a leading manufacturer of analytical aquarium instrumentation. They were founded in 1978 and are headquartered in Woonsocket, Rhode Island. When Hanna introduced pH Electronic Paper in 1986 it literally revolutionized the world of testing by allowing millions of people in various industries to test for pH in a simple, accurate and affordable way. Hanna employees are constantly challenging themselves to improve on existing technology and to invent new testing techniques with the common goal to simplify analytical testing. This applies not only to instrumentation, but also to sensors development, reagents and chemicals. Hanna also believes in controlling the quality of their products from inception to delivery so they manufacture everything themselves, from meters and electrodes to chemical reagents and buffer solutions.
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