Frequently asked questions

These are our 5 frequently asked questions. But if you have any other question, please do not hesitate to contact us.



Yes, in Aura we have done many trials with ONCE® lighting systems proving weight gain and better feed conversion in agriculture facilities.


ONCE® is an innovative photo-biology company who designs and manufactures animal-centric lighting systems. Meaning, ONCE® do not just sell “LED light bulbs”. Because animals perceive light differently than we do, all of ONCE® systems are species-specific, have both the animal and farmer in mind, and are designed to influence desirable biological processes to achieve optimum results. Most of ONCE® products are Built For Your Barn® and have a 5 year (24/7) warranty.

Light affects our mind

Most animals see with their eyes. What an animal sees depends on the structures within their eyes. These structures are not only responsible for visual imaging but also the colors perceived in the environment. The light we see affects our mind and a wide variety of metabolic processes within our body. Learn more about the visible light spectrum and how animals see differently in The Science.

Color light

Research has shown that animals in a barn respond to not only the intensity of the lighting in a barn but also the color of the lighting in the barn. For instance with chickens, blue light has a calming affect while red light elicits an excitatory response.

The best

ONCE LED Lights use only 8-17 watts of electricity (1/3rd to 1/30th of Incandescent or CFL). This will save money on electricity and replacement costs because ONCE ® LED lights last 5 years.