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I have an 110 gallon tank - about 100 gallon of actual water volume. If I'm using mostly RO/DI water, how many teaspoon Barr GH booster would I need?

The recommended amount on the sticky for 60-80 gallon is about 1 teaspoon at water change. That seems very low to me, it barely raise any GH.

Based on my calculation on the fertiliator it seems that I need about:

5 teaspooon of Calcium Cloride or Calcium Sulfate to get to 10ppm Calcium
3 teaspoon of Magnesium Sulfate to get about 5ppm magnesium
and about 4 teaspoon of potassium sulfate to get around 10ppm of potassium.
 
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