It depends on your dough weight - if it is about 600-650 g - i will bake 250 C = 20 min 200 C = 20-25 min If your dough is about 800 g - 250 C = 20 min - 200 C = 30-35 min You can use aluminum foil to cover once you get good crust color.
No, i don't. We should not use fan in bread baking as the crust will be too dry. During the first 10 minutes, we need steam for baking sourdough bread.