TheLUMii BLACK 600w Electronic Ballast’s are supplied as a stand-alone ballast with a flying IEC lead, which means you can add any reflector fitted with an IEC socket to start growing – it’s that simple! The ballast features dim and boost functions, giving you the ability to control the light output from your lamp to your plants. There are two dimmable options (250w & 400w) and a ‘super-lumens’ boost option (600w+Boost) which is on average a 10% increase in output.