Planted Tank Obsessed
Join Date: Feb 2014
Location: Los Angeles, California
How much calcium and magnesium is this?
Not too long ago, I bought an API test kit to test for my fish tank GH. It took me 16 drops to get the color of my fish tank water sample to change color, meaning that my GH should be at 16.
My understanding is that GH is a combination of calcium and magnesium. Based on that number 16, how am I supposed to figure out how much calcium or magnesium there is on my water, well besides looking at my city water report?
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