You can, indeed, get MH in several spectrums. Again, Sun Pulse has four: 3.0, 4.0, 6.4 and 10.0 K and in 250, 400, 600, 750 and 1,000 Watts. They also offer 2.8 and 5.7 K in their 1,000 W commercial MH bulbs. Their 250W is not available in the 3.0K, but then again, who would be using this...