I didn't see that as an option on the TS-600 , that's why I passed it over. Lights are a big part of ....well EVERYTHING. I want something that will have plenty of light, and if I need more I can get another that will enhance my grow now and future grows. The best grows I have seen have an equal amount of light encompassing their grows for that SOG. Symmetry is a good thing. A well planned grow space is only going to help.