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Early on, the biowall was not productive. The students at the time and I had to begin our work on discovering what changes were needed to improve the production level. The first step of this process was lighting. The class, with the use of a digital light meter, took measurements and discovered that the light setup was far beneath the level needed for even indoor plant growth, let alone the herbs and vegetables we desired. After researching and identifying options the class that year and I upgraded from 16 lights to 42 lights. We moved from small LED lights on a track system to larger spotlights. We noticed some improvement, but still not at the level we wanted. By the next year the students at that time discovered spotlights that are rated for plant growth. These lights are LED lights but mimic the UV and light demand for plant growth.
The image on the right shows the LED lights that are rated for plant growth. There are two types of lights included on the wall. The yellow glowing lights are meant to mimic the sun's rays of white light. The other lights that are glowing purple are designed to specifically provide the wavelengths of red and blue light. The wavelengths of red and blue are the more specific rays of light absorbed by chlorophyll.
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