Lawn & Patio: iPower GLSETX400DHMWING 400-Watt Light Digital Dimmable System for Plants - Wing Set - iPower Grow Light
Lawn & Patio: iPower GLSETX400DHMWING20T 400-watt Light Digital Dimmable Ballast System for Plants with Wing Set and Timer - iPower Grow Light
Lawn & Patio: Apollo Horticulture APL400 Hydroponic 400 - Watt HPS MH Digital Dimmable Electronic Ballast for Grow Lights - Apollo Horticulture
Lawn & Patio: iPower GLBULBH400 400-Watt Super HPS Grow Light Bulb for Magnetic and Digital Ballast - iPower Grow Light
Home Improvement: ROBERTSON 3P10062 CLU0400H04912 M HID CWA, mBallast Kit, 400 Watt, S51 High Pressure Sodium Lamp, 120/208/240/277Vac, 60Hz, HPF, with Bracket, Round Ignitor, Round Dry Film Capacitor (Replaces Model CLU0400H04912 ROBERTSON 3P10012) - Robertson Worldwide
Lawn & Patio: Apollo Horticulture GLK400GW19 400 Watt Grow Light Digital Dimmable HPS MH System for Plants Gull Wing Hood Set - Apollo Horticulture
Lawn & Patio: Apollo Horticulture GLK400LS24 400 Watt Grow Light Digital Dimmable HPS MH System for Plants Air Cool Hood Set - Apollo Horticulture
Lawn & Patio: Apollo Horticulture GLBHPS400 400 - Watt High Pressure Sodium HPS Grow Light Bulb Lamp - Apollo Horticulture
Lawn & Patio: Hydrofarm SBE400 400-Watt Sunburst HPS/MH E-Ballast - Hydrofarm, Inc.
Lawn & Patio: iPower GLBULBM400 400-Watt MH Grow Light Bulb for Magnetic and Digital Ballast - iPower Grow Light
Lawn & Patio: Apollo Horticulture GLK400 400 Watt Grow Light (1 HPS Bulb Only) Digital Dimmable HPS MH System for Plants Gull Wing Hood - Apollo Horticulture
Lawn & Patio: Apollo Horticulture GLK400CT24E 400 Watt Grow Light Digital Dimmable HPS MH System for Plants Cool Tube Hood Set - Apollo Horticulture
Lawn & Patio: Xtrasun Parabolic Reflector 42 in. - MH or HPS - Mogul Socket - Operates up 1000 Watt Bulb - Ballast and Bulb Sold Seperately - HydroFarm XT42HV - Xtrasun
Lawn & Patio: Virtual Sun VS400WMB 400-Watt Magnetic Grow Light Ballast - Power Max
Lawn & Patio: 400w Hps/mh High Pressure Sodium Metal Halide Electronic Digital Grow Lights System - WholesaleDirect
Lawn & Patio: iPower Branded New 400 Watt HPS Digital Grow Light System W/ Air Cooled Tube 400W Sun Lamp Plant Growing Light - Ulti-Lumenx
Lawn & Patio: 400 watt SS2 HPS/MH Switchable - Sunlight Supply
Lawn & Patio: Xtrasun BAC400A 400-Watt Xtrasun Convertible Ballast - Hydrofarm, Inc.
Lawn & Patio: NEW! DIGILUX DX400 HPS 400W Digital Grow Light Bulb Sodium Hydroponics Quality - Ulti-Lumenx
Lighting: 400 Watt High Pressure Sodium HPS Grow Light Bulb / 1x Bulb - Nikko Lighting Japan
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Hps 400 Ballast Popular Q&A
Q: Can you run a 250w hps through a 400w hps ballast?
A: No! Read More »
Q: How does a 400w hps ballast work?
A: The inductive ballast is made up of a coiled wire. The coil creates a magnetic field inside when a current is applied. It stores the energy of the current in th... Read More »
Q: Can 1 put a 430w hps light into a 400w hps ballast?
A: Lights are usu. matched to ballasts. You may go on line and check the manufactures recommendations. Read More »
Q: Can you use a 250w hps bulb in a 400w ballast?
A: No you can't, and don't try since it may explode and start a fire. Read More »
Q: Do i need a 400 w ballast for my 400 w hps bulb?
A: Yes! Any smaller and it will destroy the ballast, any larger and it burns the lamps. Read More »