HID grow light require a special power source called Ballast. You can choose electromagnetic ballasts or electronic newer, but the ballast must meet the power requirements of grow light. As these are electricity, water and heat, it is not possible to select low-priced products from quality questionable. There are two main types of ballasts that meet the needs of growers indoor. Old school magnetic ballasts have coils of the transformer and capacitive inductances that regulate the voltage. They have been around for decades and their main advantage is their low price. Unfortunately, dissipates a lot of energy in the form of heat, resulting in increased energy consumption and high temperatures in the cultivation areas.

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