LUMii BLACK Electronic Ballast 600WLUMii BLACK 600w Electronic Ballasts 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 its 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