Will a UV Light increase the growth rate of my plants.I have not yet used a UV light and have had them for 2 weeks just sitting in the conservatory i choose to use my own methow without all the equipment and the plants are growing fine which i will post here soon.However i now have a UV light and am wondering how i should ho about using it and whether or not it will increase the rate of growth. Finally is a UV light expewnivene to run as i do not want the electric bill too high..My UV light is about 50 cm long.. cheers Jon