Out of curiousity... What par umol are your plants getting? (Not sure how to put that in a phrase lol)
I'm going to pick up a par meter in the next few days or so, by the way. Until now, I've been going by my terrible math skills, advertized lumens and the lux or lumen/1000*15 equation, and how my plants react to whatever their distance from the lights happens to be.