Mammoth Lighting UV Upgrade Kit | 2 UV Bars + 100W Driver

The UV kit is most effective during the final 2–3 weeks of flowering, when stress-induced secondary metabolite production — terpenes, cannabinoids, flavonoids — is at its peak. For precise scheduling, these bars can be integrated into setups managed by the Mammoth Lighting Master Controller.

Mammoth does not recommend UV use during the vegetative stage due to diode lifespan considerations and potential plant sensitivity at that growth phase.

Yes. A nighttime protocol of 30 minutes at lights-off and 30 minutes before lights-on targets PM when pathogens are most vulnerable and plant defense mechanisms are active. Be careful to avoid disrupting the photoperiod when scheduling this application.

In Mammoth's field use, the UV Upgrade Kit has not caused yield loss or hermaphroditism even with extended flowering use. That said, excessive UV exposure — particularly during the bulking phase — can reduce yield or damage plant DNA. Always follow the recommended use windows and intensity guidelines.

The clip-mount system is designed specifically for Mammoth Mint White Series and Nova Sun Series fixtures. However, the kit is fully capable of operating as a standalone unit and can be hung independently between any existing lights in your grow space.

With UV light, intensity and spectral authenticity are what drive results. Many competitor UV bars use only 20–30 diodes at 30W — insufficient output to trigger the stress responses documented in research. At 136 diodes per bar and 100W total, the Mammoth UV Kit delivers the photon density needed to produce measurable improvements. To accurately measure this supplemental intensity, use the Mammoth M400 PAR Meter & Spectrometer.

No — UV radiation emitted by these bars can be harmful to human skin and eyes. Always wear UV-protective eyewear and cover exposed skin when working in the grow space while UV bars are active. Mammoth Lighting LLC is not liable for harm resulting from improper use or failure to follow safety precautions.

The Mammoth UV Upgrade Kit is intended for urban agriculture and production under the U.S. Domestic Hemp Production Program (Cannabis sativa L.). It is not intended for the cultivation of marijuana, which remains illegal under federal law. Buyers are responsible for compliance with all applicable local, state, and federal regulations.