3 comments | In this episode of our series, Mr. Saltwater Tank - Raw, Uncut, and First Impressions (RUF), Mark will look at the Marine Magnesium Checker from Hanna Instruments. Join us as we run a blind test on Mark's tank with this checker - we'll show you how easy it is to use, what we like about it, and discuss how often we'd use it to test magnesium in our tank. | SaltwaterAquarium.com | Facebook

120K views · 1.4K reactions | 14 Symptoms of Magnesium Deficiency. | All about health and nutrition | Facebook