SolarRail™ Cool White + 660 nm LEDs
Lighting Instrument

The Solar Rail™

With multi-channel dimming, the SolarRail gives growers the ability to deliver just the right balance of light during every stage of growth.  

Channel 2 (Cool White) 

The cool white spectrum is very blue heavy and has a large peak which helps govern early root developement and shape (referred to as morphology) and delivers a high level of photosynthetic active radiation. 

The effectiveness of the yellow and green light contained in the cool white spectrum is the subject of ongoing research, however moderate amounts of purple, green, yellow, and orange light have benefits for plant growth.  For example, the addition of green light to red-blue light increases plant size and height, as well as leaf size. More importantly, broad spectrum light provides a more comfortable working environment that makes it easier for cultivators to spot issues. 

Channel 1 (660 nm Red)

660 red light increases photosynthesis rate and plant size because it aligns with the absorption peak of chlorophylls in Cannabis, which do photosynthesis to produce sugars and carbons1, the building blocks for plant cells. During early stages of growth, Indoor Sea of Green Growing that requires smaller plant morphology benefits from lower levels of Red light earlier in the grow cycle given red light affects plant height or stretch which is particularly true when plants are young. This is not the case during late stages of growth. When it comes to flowering, Cannabis benefits from high intensity red light because it is important for photosynthesis and growth. There is a strong positive correlation between plant size (i.e., vegetative growth) and bud size. Red light also mediates flowering time.

High amounts of Photosynthetic Active Radiation (PAR) during the vegetative stage of Cannabis plants promote high yields. The additional 660 Red has been added to allow growers to over-express this wavelength during flower.

Cool White + 660 nm Combined Spectrum at 100%

Research Partners

AgricUltra has entered into a research collaboration with Ryerson University and its newly established Ryerson Cannabis Innovation Complex, as well as the Department of Mechanical Engineering, to conduct Cannabis research. 
Learn more.

660 red light increases photosynthesis rate and Cannabis size* because it aligns with the absorption peak of chlorophylls in plants, which do photosynthesis to produce sugars and carbons**, the building blocks for plant cells.

*Shimizu, H. et al. Light environment optimization for lettuce growth in plant factory (2011)

**Darko, E. et al. Photosynthesis under artificial light: the shift in primary and secondary metabolism. Philos. Trans. R. Soc. B Biol. Sci. 369 (2014)

Technical Information

Dimensions

Length 120 cm (47.24”) standard
Custom lengths available
Weight 2.7 kg for 120 cm
Width 65 mm
Height 65 mm

Operational Information

Distance from canopy  30.5 cm (1’)
Fixture spacing 51 cm (20”)
Cooling method Heat sink (passive)
Mounting type Cable Mounting
Direction Vertical or horizontal
Dimming Standard
Remote control Optional

Cool White + 660 nm Red
Technical Specifications

Combined PPFD Cool White + 660 :1000 µMols at 1 ft

Spectrum Fluence Angle Cool White (5000 K): 120°

LED Maintenance Factor (L70)
Cool White: 90k hours
660 nm Deep Red: 90k hours

Spectrum Photon Efficiencies 
Cool White photon eff = 3.01 µMol/J
660 nm Deep Red = 2.59 µMol/J

Combined Normalized Uniformity Map

Average PPDF = 16 µMols/m²/sec
2 fixtures at 61 cm (2’) from canopy