· Premium Member
A wise person then saves that .99 teaspoons in that solution, and uses it to dose the tank, one teaspoon at a time, until the mixture is used up, 99 doses later. Or, you can just dump the bottle and start over each day.If you put 1 teaspoon full of a chemical in your tank, you put 1 teaspoon in your tank (that's easy).
If you put 1 teaspoon of a chemical into 500ml of water (this is about 100 teaspoons) then take one teaspoon of this solution and add it to your tank you've add:
1/100 x 1 teaspoon of the chemical. i.e. 0.01 teaspoons.
The remaining .99 teaspoons are still in the solution that you didn't use.