The majority of cannabis planters want to increase the strength of their harvest in terms of THC levels. That is why they go into it, after all, to benefit from the outcome of the final, cured batch. Luckily, understanding the various parts of the light spectrum and how they function can help to upgrade the content of THC in your buds by 28%. Please continue reading to see how including a bit of UV-B light in your plant can significantly increase its strength.