First:
http://www.aquaticplantcentral.com/f...gal-light.html is how I made the reflectors.
Second:
The plantlets all look about the same, with a few yellowing leaves here and there, but only slight growth so far. A possible problem is that the tank temperature isn't steady, since there is no water in it. It varies from about 65F early in the morning to 75F late in the lights on time. I think it will be another couple of weeks before any significant growth can occur.