You need something more powerfull. The same company has 500 watt replacement bulbs. K is 5000. Yours is more toward the proper spectrum, but these are way brighter. They also have an 85 watt 6500K. We're talking veg state.

For bud:
Compact Fluorescent - 85 Watt - Warm White 3000k - Sunlite 05581 Light Bulb

Great, now I want to try fluoros.