Very interesting. So, the fish do thrive in distilled water? I was once told that fish would die in distilled water cause it had lower oxygen count. Guess he was wrong? I have been drinking Walmart distilled water for years. I run it through a carbon filter first to remove any impurities form the plastic bottle. I'm so use to drinking distilled, I have trouble drinking anything else cause it all tastes awful to me. My local health store lady told me distilled water was bad for humans because it draws off to many minerals from our bones. I like to think the reason I never get any kidney stones is because the distilled water dissolves any oxalate crystals before forming into stones.