Step 6: Update! Thigns Have Grown.
Below is a photo of a little spinach sprout that has been germinated and grown a few leaves using the LED lights.
Having sprouted a few plants using this system i have transplanted them over to some compost on my windowsill as I didn't think my bench top supply would be too happy running 24/7.
I've picked up some odds and ends today now my student loan has come through, so hopefully within the next few weeks I'll have a larger system set up with 3w LED's and some nice microcontroller control, and quite possibly an instructable documenting it all.