The name "420" references the area of the light spectrum produced by this lamp. The PowerVEG 420 is a true VEG light for indoor growers. PowerVEG 420 provides a spectrum that is crucial for plant growth during the vegetation cycle, focusing all spectral energy at 420 nanometers. This high UV A spectrum adds the nutrient values that are vital for the growth. Combined with the spectrum provided by the FS+UV fluorescent grow lamps, the PowerVEG 420 maximizes the initial growth process for vegetation through:

• Tighter internodal spacing
• Stomatal opening 10 times greater than red light (feeding tube of plant)
• Stronger root growth
• Chlorophyll A
• Lutein
• Zeaxanthin
• Beta carotene