Used to grow plants during the bloom phase. The item "Ushio 600W HPS Hilux Gro Opti Red Lamp bulbs 600 watt digital hortilux grow" is in sale since Sunday, November 21, 2021. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Hydroponics\Grow Lighting & Accessories\Grow Lights & Light Bulbs". The seller is "rayger777" and is located in Greenville, South Carolina. This item can be shipped to United States.