LUMII BLACK 720W - LED GROW LIGHT with LUMii Black ballastPowered and controlled by the LUMii BLACK 600W Electronic Ballast , this high performing, high efficiency LED 6 Bar Fixture can be used singly or as part of a lighting array. Lightweight and easy to install, if hung by means of LUMii Rope Ratchets the height of the fixture can be adjusted as your plants grow. The LUMii BLACK 600W Electronic Ballast, mounted directly on the fixture or positioned remotely, can dim the LED Fixture to 400W or 250W, or the