Magnesium (MG) Test Kit

Saliferrt magnesium testing is very good accurate i recommend highly for marine testing.

I have a 72 Gallon Bowfront Reef tank. It is imperative to have proper magnesium levels for proper calcium and alkalinity stability. This test kit is accurate, easy to use and read. I had no problem with my first test. It precisely matches the test I had performed by our state university. I was relieved to see that my test was identical to the state test. Imagine my relief to see that I am achieving a successful and healthy environment. Viva la Nederlands!!! 😂

Simple comes with instructions and easy to understand.

Good testing kit for magnesium.. always test your tank.

Probably the most accurate method to measure magnesium, is still has its caveats. The acceptable air in the 1.0ml syringe is the most challenging. Maybe it's my medical training getting the best of me. My work depends on accuracy, and an air bubble allows for too mush discrepancy. Other than that, it works as advertised.

I run several marine aquariums. I manually test 6 parameters on each tank twice a week, have tried every single brand of test kits over the last 5 years or so, have owned automated testing systems (and found them completely inadequate and generally inaccurate), and routinely send in samples for ICPOES testing to confirm my manual results. This is clearly the most accurate hobbyist test currently available for magnesium. The test is easy to perform with a clear endpoint to the titration. Salifert recently shortened the test process by one step, making it even simpler to perform, without loss of accuracy. Some may be tempted to switch to the new Hanna magnesium checker. Don't do it. Overall, Hanna makes great hobbyist checkers, and they are my first choice for several parameters. Unfortunately, not so for the Hanna magnesium checker, which consistently gives reading of about 100 ppm lower than the actual value. I was frankly stunned how badly they flubbed this one, considering how good their gear is overall.

I often need to use the thing, my saltwater aquarium every week to test the water quality, easy to use, easy to operate.

Make sure you follow directions on this one! I read direction 6 incorrectly, thinking that you hold the syringe tip up because they didn't want us to spill the reagent every where. Well at first I was calculating the result by how much I was putting in and couldn't get the test to read accurate. You must drop the reagent into the vial and then when it changes color, your readout is based off of what you have left in the syringe. So, for accurate measure, if you use the whole syringe of reagent, you have a perfect level of 1500ppm... if you used all but .3 like I did, you're right around 1440ppm... Product arrived outside of the box with the contents in bubble wrap and I ended up having a perfect box with protected test kit in bubble wrap!!