LUMii Black 600w Digital Dimmable BallastLUMII Black 600W Digital Dimmable Ballast Introducing the LUMii Black 600W electronic ballast at Holland Horticulture, offering impressive dimming and boost functionality at an affordable price! This versatile ballast allows you to dim the power to 250W or 400W, making it perfect for managing high temperatures in your grow space or for early vegetative stages when full 600W output isn't necessary. Additionally, the super lumens feature boosts output