What it looks like to me is that a good portion of the alks crashed out and sunk to the bottom in such a density that the water on the bottom half is being blocked from the UV. The top layer is still glowing because there is still alks that didn't crash out, and the liquid is clear enough that it's reacting to the UV light.
That's the only thing I can think of that would be going on. I'm no chemist though.
Everything published by Gone-and-Back are the mad rantings and ravings of a mind who yearns to be free and thinks he knows what he is talking about. However, these are just delusions made to feel that freedom, because that freedom will never come. Any experiments done are purely figments of the imagination, and are falsified to the highest degree. Nothing should be taken seriously from a crazy mans mind.