I think Im going to add a 1000 watt m/h to my 1800 watt hps 20 plant grow. They are about 3 weeks into flowering and long flowerers. I just want to know if poeple think it will make a difference in quality and weight. My logic is that THC is produced by a plant geneticly but also as a sunscreen. HPS doesn't produce much UVB rays but MH does it should help right?

I have 11 different strains in there and I want the best possible results.