Yes, a plant will grow based on the amount of light it is on, not the spectrum. Although our "solo" range uses a "bloom spectrum", it can still be used for growth. However, the growth will not be as compact and squat as the GCx-4 in pure growth mode. We are the only manufacturer to offer a growth mode at all. If you use a solo lamp for growth, you can expect about the same growth result as from our competitors.