"Our results show that photodamage to PSII by
sunlight is primarily associated with UV and yellow
wavelengths (Fig. 5), "quote from PDF many growers feel that UV light changes/modifies the guilty/quanity of their medicine for the better. i myself flower under HPS until the last few weeks. i then finish with a MH. been doing it like this for a loooong time because it improves the smell , taste ,high. i have always thought that the blue from the MH caused these changes but have recently read that MH puts out a lot of UV rays so maybe its the UV? I also use the cheap bulbs and am quite pleased with the results. but i guess im rambling .will filtering out that yellow peak make my plants grow noticeably faster? will adding more of this yellow have an affect for the positive?when will my lunch be ready???