Try using your flash on the camera lol. It should be many times brighter than the LEDs. Works for me...

Interesting experiment by the way, im eager to see the final product.
GetThisOrDie Reviewed by GetThisOrDie on . LED EXPERIMENT - BLUE DOMINANT FLOWERING Starting 12/12 immediately, they've rooted in the net pots, I'm using some sterilized creek pebble as a base to give the bottom some space for roots, and a rubberband to help hold the pots in place. This is major SWC, the trays are barely an inch and a half tall. Consider this a makeup for the lost PC case build. 30w for two plants, 8-460nm diodes and 4-660nm diodes per lamp. This should be fun! Rating: 5