In different places in the world the water has different levels of Magnesium and Calciumions which form solid salts called lime scale on your dishes and glasses. If you have soft water with very little Magnesium and Calcium your are lucky. Your water is soft and your dishes will have no lime scale. If your water is hard like we have in Berlin, then your dishes would normally get that lime scale. Luckily the Clexana dishwasher tables softens that hard water and all is fine again.