Growing moss in a container - outside

[markob]

I am seeking advice on planting moss into the container (It will be outside, some of it on full sun, some of it in partial shade). I know about the gravel for drainage and the fact that you should use a well drained soil. I am not sure if I need to have an activated carbon / lump wood charcoal layer also. I know that you need it inside, but not sure if I need it outside?