Find the perfect grow bulb for your indoor garden at Horizen Hydroponics! We stock the most popular brands of grow light bulbs including Hortilux, Ushio, Optilume, Plantmax, and Vitalume. Bulbs are available in all sizes from 250W up to 1000W. High Pressure Sodium (HPS) and Metal-Halide (MH) bulbs are the most common lamps used in indoor growing environments. We also have all of the latest technologies such as CMH and Double-Ended (DE) HPS bulbs. Speak with one of our experts in-store to pick out the best bulb for your needs. Free shipping available!