Yes, a common 4'/120cm configuration is two MH lights and two 4' T5HO lights. Often, the MH bulbs are 10,000-12,000K for high intensity white light for growth, and the T5HO bulbs are actinic to provide good color. If you're worried about it, you could even go 12,000-14,000K with the MH bulbs as well. Twm MH bulbs side by side in the middle and the tubes on the front and back of the fixture.