Hello all! For lack of better terms I would consider myself a "water nazi". I sample my water at least three times a week to verify everything is at its proper levels. After I test my water, I usually make a trip to my local LFS to make sure my tests are accurate. The last test I conducted yielded these results: PH - 8.2 Salinity 1.025 Phosphates 0.0 Nitrates 0.0 Calcium 500 Magnesium 1350 Alkalinity 8.9 About my tank: 75 gallon ...