Firefly Growlight

Increase CBD and Terpenes Levels

Sunlight Spectrum Increases CBD and Terpenes Level

In the beginning of 2022, Firefly Growlight co-operated with a Swiss CBD producer in a series of comparative trials. In Switzerland, the cultivation and sales of weed with less than 1% THC is completely legal. This has led to a huge professionalization in the market, with mostly scale-ups of grow rooms. However, there have also been huge steps forward in the development of new strains that stay under this 1% threshold, but also increased levels of CBD and terpene content.

Vision of hemp – the owner of the CBD brand: Holy Shit – proposed a comparative trial in one of their most advanced growrooms. Vision of hemp is a proud organic grower who puts the flavor and cleanliness of the buds as his top priority. The growroom where the LED was tested was 60m2, and had about 70x 320W LED grow lights of a known brand installed, the airflow in the room is excellent (clean). The nutrient programme was the same for all plants in this growroom. Two of the existing growlights we replaced with one Firefly LED 600W unit. The results blew our mind!

After the complete growth and including its drying period, we collected the samples of the buds grown under the Firefly and under the competitors’ light. Not only did the buds look more compact, but the smell was also a lot stronger too! They were harvested and dried at the same time, in the same room, but still the smell was so much stronger and sweeter! The samples were sent to a top laboratory in Spain: Fundacion CANNA, who have been researching cannabis for almost 15 years and are one of the first labs in Europe to be able to legally test cannabis flowers.

The results from the laboratory showed what we already expected! The Terpenes, of the buds, grown under the Firefly LED were 60% (!!) higher compared to the buds grown under the other LED grow light. The CBD level was almost 15% higher.


Open here the complete test analysis of the research laboratory executed in Q1-2022.

Very happy with these results we agreed with the Swiss grower to execute the trial a second time to see if the results would be similar. The trial was replicated with a different strain (during the first trail a lemon haze was used, the second trial a hybrid strain).

At the end of the growth and drying period we collected the samples and again the difference in smell was noticeable, not so much a stronger smell, but sweeter. A quick taste test indicated that the buds grown under the Firefly LED were much stronger!

The samples were sent to Spain, and our subjective opinion was confirmed. The lab found that the buds grown under the Firefly LED had about 10% more terpenes overall. But a difference can be seen in two profiles; the Firefly boosted the production of Beta-Myrcene and Guaiol, whereas the buds grown under the competitor LED had more Alpha-Pinene. This trial, the difference in CBD level was enormous. The Firefly buds contained


Open here the complete test analysis of the research laboratory executed in Q2-2022.

These trials are ongoing processes, and we are constantly busy with research of different strains and in different in growing areas. If you are interested in getting the best quality out of your growth and want to trial the Firefly LED do not hesitate to contact us. In the meantime, when we have new research results, we will post them on our online channels and of course here on our website.

Terpenes, Cannabinoids and the entourage effect

  • Terpenes are unsaturated hydrocarbons that are naturally occurring because they are often made by plants. There are over 30.000 different compounds (over 50.000 if you count terpenoids as well). Their function varies widely, but they are mostly credited for creating a certain smell. These smells are used to defend against predators, attract certain pollinators and intra-plant communication. However, they also might be involved in helping modulate cell growth, plant elongation, light harvesting and photoprotection. In cannabis, terpenes are attributed with mostly smell and flavor characteristics. The more common ones are: Myrcene (herby, earthy but also lemony tones), Limonene (citrusy), Pinene (pine tree, dill, parsley, sage), Caryophyllene (peppery spicy, woody, cloves, cinnamon), Linalool (floral, sweet, citrusy) and Humulene (found in hops). Other than smell and flavor, terpenes are also credited to have therapeutic characteristics, however in our view there needs to be done a lot more research in these fields. What we do know is that more terpenes give a better experience than less terpenes.

  • Cannabinoids are compounds found in Cannabis (but also in some other plants) that can interact with humans’ endocannabinoid systems (ECS). A lot of research in this field needs to be done to produce clear cut answers, but it is clear that the ECS regulates many functions in the body, amongst them neural functions. Which is why cannabis has already shown to have beneficial effects for ALS patients. The most well-known (infamous) cannabinoids are delta-9-tetrahydrocannabinol (THC) and CBD (Cannabidiol). THC is the psychoactive component that gets people “mental high” when consumed. CBD is non-psychotropic which means that the mind can stay focused, but the high is more corporal. In cannabis plants, the highest concentration of cannabinoids can be found in trichomes in the flowers of the plants. Different varieties and strains of cannabis can produce different combinations and levels of cannabinoids, but also the grower has some influence since there are known external factors that influence the production of cannabinoids and terpenes in plants. Healthy plants are definitely an important one, but also UV light in certain doses will boost the production of both CBD and THC.

  • The entourage effect is said to be the “magic effect” of cannabis. There is a lot of literature out there that suggests there is an effect where terpenes and cannabinoids interact to create certain types of experiences with cannabis. This interaction is referred to as the entourage effect. Scientific research doesn’t seem to fully support, since many trials have either shown varying effects or no effect at all. However, anekdotes suggests that there might be there, except we can’t prove it… yet…