Ballasts are an important component for hydroponic lamps, yet their role and significance is frequently misunderstood. A ballast is a device that regulates how much electricity a light bulb receives. Too little power and the bulb won’t light up. Too much power and you risk blowing a bulb. Not all ballasts are created equal. There are two types of ballasts available; magnetic and digital.
Magnetic ballasts can be more affordable, durable and tolerant of a wide range of temperatures. However they are heavy, inefficient, have no built-in protection, and aren’t controllable or dimmable. They also generate a lot of heat.
Digital Ballasts are highly efficient, safe and adaptable while being dimmable and able to work with a controller. They also produce less heat, are lighter and smaller than magnetic ballasts, and often have built-in protection and safety features. See Why Digital Ballasts to learn more.