It started with me seeing dark spots appearing on the leaves of my mango tree, which grows in my apartment. When I looked underneath the leaves I saw something white growing there. Now it has spread to most of the leaves.
Today two of the leaves fell of, probably because of this disease. I have made photos of the tree, the leaves, which fell of, and two detailed macro pictures. But for now I will just add two of the pictures due to not having enough reputation to have more than two links on this page.
I really want my tree to survive so I hope somebody here can help me identifying what disease this is and how to fight it. Preferably in a way I can do it in my apartment.