And found it full of bullshit, broken logical links and unsupported statements.
Now I could do a full analysis but then it would be a waste of time, so just answer to a few questions:
1. How can the plants change the spectrum (or energy) of light, and more specifically why would I care if my audio system is in a basement with no plants and no natural light?
2. Why should I be bothered by these changes, supposing they really exist?
3. Why and how should a perforated square of paper affixed to my speakers somewhat "restore" the proper distribution of light?
BTW, Aspirin (trade mark for acetylsalicylic acid) is no longer extracted from bark trees for (at least) one century, so would you please leave Bayer alone?!