Well, a year ago or so it would have been easy to assume the LEDs you are talking about were meant for "moonlight" night viewing and would be entirely unsuitable for plants, giving off not enough lumens for photosynthesis. But LEDs are a fast-moving lighting technology, so I suppose assumptions might not be right and you could have something new there you are asking about.
There have been a few threads on TFF here and there about LED lighting if you do searches. Usually these are DIY articles where the techie-enabled folks are building their own LED lighting. As we all know from the new automobiles beginning to show them off, extremely bright white LEDs are certainly out there.
Just last week I was reading an article by some scientists who have figured out a way to produce Galium Nitride semiconductor LEDs for a tenth the previous price. They managed to figure out how to grow the crystals on less expensive silicon large wafers, rather than smaller sapphire substrates, which had always been required before now. Some are saying this particular break-through could be the long-anticipated one allowing these devices to begin actively displacing both traditional and recent lower-energy attempts in the world of household lighting.
Anyway, hope somebody out there will connect up with you and have the answer...
~~waterdrop~~
