The Best 400w Ballast of 2021

117,905 reviews analysed

Rank		Product Name	Score
		VIVOSUN 400 watt Dimmable Digital Ballast for HPS MH Grow Light, Soft Start Program & Stable Perform By VIVOSUN	9.4 SCORE	View Product
2^nd		iPower GLSETX400DHMWING 400 Watt HPS MH Digital Dimmable Grow Light System Kits Wing Reflector Set, By iPower	9.3 SCORE	View Product
3^rd		TOPHORT 400 Watt Digital Dimmable Electronic Ballast for HPS MH Grow Light Bulb Lamp By TOPHORT	9.2 SCORE	View Product
4^th		400 Watt - Metal Halide Ballast -5 Tap - ANSI M59 - Max. Temp. Rating 212 Deg. F - Includes Dry Capa By Satco	9.1 SCORE	View Product
5^th		Hydrofarm Quantum QT400 Dimmable Ballast, 400W, 400 W, By Hydrofarm	9 SCORE	View Product
6^th		iPower GLBLST400D Horticulture 400 Watt Digital Dimmable Electronic Ballast for Hydroponic HPS MH Gr By iPower	8.9 SCORE	View Product
7^th		ROBERTSON 3P10040 HID CWA mHID ballast for 1 400 Watt, M59 Metal Halide Lamp, 120/208/240/277Vac, 60 By Robertson Worldwide	8.8 SCORE	View Product
8^th		Yield Lab Horticulture 400w Dimmable Digital Ballast for HPS MH Grow Light By Yield Lab	8.7 SCORE	View Product
9^th		iPower GLSETX400DHWING20 400 Watt HPS Digital Dimmable Ballast Grow Light System Kits Horticulture W By iPower	8.6 SCORE	View Product
10^th		GE Lighting 72300 GEM400ML5AA4-5 120/208/240/277/480-Volt Magnetic HID HID (1) 400-watt Metal Halide By GE Lighting	8.5 SCORE	View Product

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