Description
Streetlight LED 45cm 18W Dual Spectrum 6500K/2700K is a compact, energy-efficient propagation and supplementary lighting unit that provides both the blue vegetative light and the red flowering spectrum in a single, easy-to-position tube. We have been recommending dual spectrum LED streetlights to UK growers since 2017 as a cost-effective way to add targeted light to cuttings, seedlings, and under-canopy areas where your main lighting cannot reach effectively.
Why Dual Spectrum LED Delivers Results at Low Wattage
The combination of 6500K cool daylight and 2700K warm red in a single unit means this 18W streetlight supports both vegetative growth and flowering with no need to change bulbs or adjust the lighting setup between stages. The 6500K component drives chlorophyll A and B absorption, fuelling photosynthesis and promoting compact, bushy vegetative growth. The 2700K warm red component pushes the far-red phytochrome response that encourages flowering, stretching internode development during transition, and resin production during bloom. At 45cm, this light is perfectly sized for propagation trays, clone domes, small seedling shelves, and as a supplementary under-canopy unit in larger grow rooms. LED technology means the tube runs very cool compared to fluorescent or HPS alternatives, reducing heat stress on young plants and cuttings that are most vulnerable to high temperatures.
How to Position and Use the 45cm Streetlight LED
For propagation and seedling use, hang or position the unit 10–20cm above the canopy. Young cuttings and seedlings need lower light intensities to establish without stress, and the 18W output is well-matched for this purpose. For under-canopy supplementation, attach the unit to the lower frame of your grow tent pointing upward into the lower branches to increase light penetration into sites that your main light cannot reach. The streetlight format allows easy mounting via the end caps using hooks, cable ties, or brackets. Run on the same timer as your main lighting. Combine multiple units across a propagation shelf for larger-scale clone or seedling production.
The Streetlight LED 45cm pairs perfectly with a propagation tray, clone dome, and rooting gel for a complete propagation station setup. Browse our full lighting range for main grow lights, timers, and environmental controls.




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