I notice my water color changed. We I first started, the water was little pink(due to water wetter). But now the water is now a little greenish. Also I notice the wall of the tube have a layer of stuff on it, which was not there before. Any ideas of what those stuff might be?
Flush your system and run it with a teaspoon or two of bleach in the water until things clear up. Flush again and fill with distilled water, Water Wetter and 10% antifreeze. The antifreeze will cut the efficiency a bit but it will also keep the copper and aluminum from fighting.