All we are doing is adding it to our 2 gallon jug of drinking water. We started out with a tablespoon, and my husband adds another bit every 5 gallons we drink. We distill our water, and I think I read here that the purer the water, the better the saturation of the DE.
Correct. The more pure water is the more solvent it becomes. So it will dissolve more silica trying to saturate itself.