I got that bulb from HD for $10. It is better than the Sun-Glo that I had purchased prior to that.
It is supposed to simulate the amount of light produced by the sun at primetime (noon).
Interesting. I'll have to check it out.
Oh - I have a great idea for identifying your Eleocharis.... when it fills out more, you can send me a bit...
I can key it out specifically when it blooms (need a microscope)