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400V HID Digital Ballasts

400V HID ballasts are designed for those looking to get a little bit extra from their grow bulbs. It differs slightly from a digital ballast in that the 400V ballast converts the standard household 230-240V and converts it to 400V. This allows more usable light (micromoles) to be emitted from the bulb than standard 230-240V lamps. The average increase with 400V lamps can be up to 8% more light, which for the you the grower means improved growth and on average 10% higher yields compared to 230V.