I would think it would be more of how big of space you have and if your using anything reflective, like a hood of some sort for the lights.....But I run mine on splitters....took one splitter, plugged it up into my fixture, then I added a splitter to each end of the splitter plugged in the fixture giving me 4 lights for each of my fixtures.....So I have 3 fixtures running 12 CFL/26W(6500K) and they are all angled....They seem to be working rather well for me!! Plus less lighting fixtures always help!!:rastasmoke: