Welcome back oldmac! :jointsmile:


I think RustyTrichome had a UVb CFL that he was using, maybe do a search on his posts about it. Stick one of those in the cab, and see what it does. I don't think it has to be super close to the plants like normal CFL's/fluoros. Just remember to use proper eye protection, or better yet, make a kill switch for the door and light so it's not on when the cab is opened :thumbsup: