I wanted to update...
I'm getting good growth from Caulerpa and I added some Chaeto to my pico as well and it looks pretty good so far.
I'm impressed that the bulb can grow anything lol.
I suspect that I may be able to even grow some low light corals with this thing.
If I ever take down the saltwater pico I think this could grow at least medium light plants... but then again I could be wrong >.<
If I find out anything else I'll update the thread again since I think I'll only be able to find my answers through experimentation.