Hello, I have a Miele G611SCIPLUS-3 which was in the house I have. I do not have a manual. The dishwasher is starting to not work as effectively, as the salt and rinse aid light is on, at the front. A friend has told me where to put the salt in, but it is filled with water. Do I just tip it into the water? What about the rinse aid? Do I need that if I use Finish Powerball. Thanks. C