So I stopped manually putting the lights on,and kinda just left it to do it's own thing. Growth has slowed down a bit, but that could also be due to the weather getting cold.
Here are some random pictures I took before the lights stopped going on everyday:

The HM was a little monster, invading nearby cantainers and continously growing over the piece my piece of wood with the moss and java fern:

Not looking so good:

HM and moss:


This is how it looks now, growing with only the ambient light that the room receives:

And here is a "visual illustration"

of the whereabouts of the closest window:

Reach for the light!
I have been thinking of moving this tank outside. But, would that be wise with all the coldness that's on it's way?