I had my seeds germination in paper towel in a bag for a week nothing showed. When I put them in the darkness they still didn't germinate, so either seeds weren't mature enough yet, which I don't think is the case or something else happened with the light exposure. Also I would try wraping that cup in tinfoil to increase light reflection and paint that picture white or put tin foil over it as well. Best of luck m8! like your setup, I plan on trying to get more bulbs in my box, as I only have one lamp to use atm.