One day ago I filled the bathtub with water and put the bottles in it to soak. The sight made me very sad because everything I have to clean by hand. The next day I spent three hours to clean everything. First scrub the bottles with a bottle-brush, then lay the bottles in a chemical liquid for fifteen minutes, and at the end rinse the bottles out with water. Now everything is clean and I can start pour the beer in the bottles.
Today is the tenth day.
I can start filling the bottles. First I added a teaspoon of sugar to each bottle, fill all of them and closed them. It takes five to seven days to complete the second fermentation. So I have to be patience. After seven days the bottles have to go into the refrigerator.