I always have this part of me that's looking to modify something along the way. For instance it is of course tempting to add more light. I'm probably at the low end of acceptable total wattage with my Reflector 48. I think it comes in at 105 watts give or take. If I were to do so it would be some small CFL side lighting or I've been looking at some low watt LED grow strips. Then again I really thought about my set up a lot and the way it is now my temps are great. Anything more and I would probably struggle with temperature as I have in the past two grows. So for now I'm going with "If it ain't broke don't fix it until it is."