Thank you everyone, I really tried. First real planted tank, first "scape" 
But unfortunately I have to college in september, and in summer I have to work. In my new place there won't be enough space for this tank, so I'm selling the plants and the fish now... At autumn I'll be setting up a new 60cm tank, that's the biggest size that fits with my new room. So I'm not that sad, I'm looking for the new tank really much, it'll be an extra tall tank.
But unfortunately I have to college in september, and in summer I have to work. In my new place there won't be enough space for this tank, so I'm selling the plants and the fish now...
At autumn I'll be setting up a new 60cm tank, that's the biggest size that fits with my new room. So I'm not that sad, I'm looking for the new tank really much, it'll be an extra tall tank. 
