volts

Hey guys, so Im looking to build my first DIY COB set up and I wondering if I should try and run 9 COBs or 6 COBs ? My plan was to run 9 to have 1 light every sq ft but Im having trouble finding a driver that would run all 9 COBs in series. Would I be better off doing 5 COBs on 1 driver, and 4...