The Planted Tank Forum - View Single Post - API GH Test Kit questions....
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Old 01-05-2013, 01:27 PM   #14
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Originally Posted by JeffHerr View Post
I've got 11GH and 6KH.

Is there value in still dosing Equilibrium after a water change?
GH is the measure of the amount of calcium and/or magnesium in water.
GH 11 is already high but it's still possible it's short of calcium or magnesium.
I wouldn't use Equilibrium because it contains both (and more of other
minerals) and would raise the GH even further with the substance I don't need.

I would see the water report or find a way to test if it lacks one or another.
Then dose just that.
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