I was about to start yelling "6500K!!!" but you got it!

I had T12 in 6500K and my plants were not thriving, switched to T8 in 6500K with a double bulb fixture and it is the best lighting I have tried next to saltwater coral lighting. Double bulb T8 is better than the spiral screw in bulbs in my experience too.

What I am trying to say is, if you aren't happy with your plant lights, don't go buy something expensive just yet, just try different size bulbs and fixture. I got mine at Lowes or HD.

Very nice enclosure! I would call it vivarium worthy.