Supplemental light for flowering?

Thanks all

How I see it is if you want to add one and pay for the expenses of using it go for it. I don't feel its needed personally. The mars light is very strong and as long as you have your light in a good spot to maximize it's output without burning your plant, your buds will be of good or better quality. Keeping in mind everything else is in good levels during the grow. Happy growing and good luck my friend. 👊

Hey Harbringer, yeah the UV has never been disproven and does benefit the plant during flowering as well but like the article you linked said the increase in THC Yield would only be as much as 3.4% (some believe it can get up to 5% but there's no official research showing those results as far as I know) which is a nice increase for large scale growers, but for micro-grows like most of us out here the cost efficiency of buying and running a strong UV-B/A light to increase yield will be very small and can even decrease cost efficiency! It will be very helpful against pests and fungi though!

https://vanessa-nielsen.com/cannabis-plants-uv-light/#:~:text=To%20increase%20THC%20in%20the%20flowers%20of%20a,this%20increases%20%CE%949-THC%20content%20from%202.5%25%20to%203.2%25. https://medicalmarijuanagrowing.blogspot.com/ UV is not disproven at all... And if anything research/information available says it helps flowering Cannabis produce more Thc but not CBD.

*Oh and forgot to mention that UV light can also be helpful against harmful bacteria and Calcium uptake but with proper grow space hygiene and proper diet it's quite irrelevant.