Apollo Horticulture Hydroponic 400 Watt Dimmable Grow Light Ballast And HPS Lamp X2. This is a set of two ballasts and lamps with reflectors. These were set up and used for about a month before being put into storage.They work great and are very bright. See photos for best detail. The item "Apollo Horticulture Hydroponic 400 Watt Dimmable Grow Light Ballast And Lamp X2" is in sale since Monday, July 15, 2019. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Hydroponics & Seed Starting\Grow Light Ballasts". The seller is "theketchupmess" and is located in Manchester, New Hampshire. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Aruba, Sri lanka, Uruguay.