All new from industry leaders LUMii, this 6 bar LED fixture rated at 720W is a great choice for stimulating vigorous growth in your space. To power the light, you will need the LUMii Black 600W Digital ballast which is sold separately. This is the same ballast used for the LUMii Black HPS kits. General Information These lights are lightweight and easy to install by using LUMii rope ratchets whereby you can adjust the height of the fixture in line with the height of your canopy. You can mount the ballast directly onto the fixture, or positioned away from the light unit. Benefits Dimmable from 250W, 400W, 600W. For maximum power, you'll need to use the 600W Boost setting. Full Spectrum - Perfect for use from start to finish PPF of 1870µmol/s - Stronger output than 1000W HPS lamps How to Use For best results, install in line with the manufacturers instructions. The ballast can be fixed directly to the unit, or positioned away from the light outside of the grow space to held reduce heat output.