For eight years now, I have been using Reef Fusion 1 and 2. In the past year, I have added magnesium to my third Bubble magnus port. The reason it was added is because my Mg levels were low(950 according to Red Sea). Now I am consistently above 1500. The ingredients on the Reef Fusion product are a little vague for my liking, but show Mg in its ingredients. I also believe that most Mg test kits are not accurate. So my question is: Should I be dosing Mg even though Fusion 1 and 2 contain Mg. I can test the same sample of water with three different Red Sea test kits and the results vary by roughly 350ppm.
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