Elos provides the highest grade test kits for analyzing aquarium water

You can count on the results you will get with Elos test kits are not only accurate but very easy to use. Each test comes with calibrated droppers ensuring that every drop administered is exactly the same size. You can do the test 1, 2, 3, 4x and the result will be always the same!  Stability is the name of the game, consistent and accurate tests are very important to obtaining great results with SPS.

Elos is the only Lab grade test kit certified by NIST (National Institute of Standard and Technology). Samples of each batch produced is sent out to NIST to validate the test reagents for accuracy and consistency. Expiration dates, batch and lot numbers in every kit and every reagent to carefully manage batches and to  provide proper shelf life of the test kit. 

Packaging, instructions and reagents are clearly labelled with both written and illustrated instructions along with professionally calibrated color charts, makes every Elos test kit simple to understand and use. Another thing I like to point out that is often overlooked is that Elos test kits regents are packaged in clearly labeled childproof containers and are considered non-toxic. The top 3 test kits I recommend to all reef aquarists to ensure solid foundation for a balanced system that includes; Calcium (Ca), Carbonate Hardness/Alkalinity (KH) and Magnesium. If your having trouble with algae or slow coral growth I suggest using a combination of Nitrate and Phosphate test kits. 

Please check out this video by Marine Depot on the Elos aquarium test kits

Lab Quality Calcium (Ca) Water Analysis for the Marine Hobbyist
Calcium is the primary building block for corals, calms, calcareous algae and many other marine organisms that we grow in our aquarium. Accuracy and consistency is crucial to guarantee that you are providing optimal living conditions for your marine aquarium inhabitants. 

Precise Titration kH (Carbonate Hardness) kit for Freshwater/Marine Aquariums
Alkalinity is essentially a means of quantifying the stability of pH in a solution, such as aquarium water. It is a measure of the concentration of various negatively charged ionic compounds (anions) such as carbonates, bicarbonates, borate and hydroxides in the aquarium water. If left unchecked, the alkalinity drops below a critical level and pH begins to fluctuate more wildly than is normally suggested (a daily pH shift of +/-0.2 is normal in marine aquaria), causing stress to livestock. In a marine aquarium, the alkalinity should be between 7° and 10° dKH (German carbonate hardness).  In a fresh water aquarium it should never drop below 3° dKH. 

Elos AquaTestKH makes it possible to quickly determine the buffering capacity of your aquarium water. It is an high quality product that offers high accuracy thanks to several procedures including: calibrated lab droppers with consistent and predefined drops size, NIST (National Institute of Standard and Technology) certified samples to validate reagents and strict stock management to supply to our customers ONLY the fresh test production batch available.

Easy to use & read Elos Magnesium (MG) aquarium test kit
Magnesium is a major salt in natural seawater. Contrary to its significance this element was ignored for a long time. We know today that Magnesium creates a remarkable improvement in the growth of calcareous algae and invertebrates. In Marine Aquarium it is good practice to keep its concentration around 1.300/1.350 mg/lt. otherwise aqueous calcium ions (Ca2+) could bond with carbonates and not be available for corals intake. ELOS AquaTest Mg permits the precise measurement of Mg values thus permitting to perfectly dose our Magnesium additives.