KH Test Kit
This method, compliments of Cardinal's Keeper (
http://www.plantedtank.net/forums/di...-solution.html)
(Note: You will need a whole gallon of distilled water to do this.)
1. Start with 6 cups of distilled water in a clean measuring container
2. Add 1/8 teaspoon Sodium Bicarbonate (baking soda, freshly opened) to the 6 cups of water and mix
3. Pour out 3 cups of this mix and discard
4. Add back 3 cups of distilled water and mix
5. Pour out 3 cups of this mix and discard
6. Add back 3 cups of distilled water and mix
7. Pour out 1 cup of this mix and discard
8. Add back 1 cup of distilled water and mix
7. Water comes out to a 4 dKH solution
8. To make a 2 dKH solution, mix one cup of the 4 dKH solution with one cup of distilled water.
9. To make a 1 dKH solution, mix one cup of the 2 dKH solution with one cup of distilled water.