LWF54T5HO865 8pack 4 FT 6500K T5 HO Fluorescent Grow Light Bulbs (8, 6500k - Blue - Veg) Each Lightwise High Output T5 Bulb produces an Outstanding 5,000 Lumens each! This is 2x the Output of Standard T5 Bulbs - - The "GROW" Spectrum is most commonly associated with Lush, Green, Vegetative Plant growth. Bulb is perfect for Seed Starting and Cloning and can also be used as a full-term Light Source - - Mixing the two Spectrums will result in a more Complete Spectrum for Growing - Lightwise Bulbs have a 20,000 Hour Lifespan - Our T5 System is designed to compete with high intensity discharge bulbs in terms of light intensity and output. This grow light is formulated to offer you the following benefits: Dependability: Man-made light sources experience some level of lumen depreciation over time. T5 Fluorescent bulbs will only depreciate between 8 and 10 percent of their rated lumen output throughout their lives. Cost-Effectiveness: Less wattage = lower cost. A key factor in switching to T5 lighting is its ability to not only produce better light, but also to do so while consuming far less energy. Superior Plant Health: T5 lamps promote incredible health and bloom of seedlings, cuttings, and produce enough light for full-term growth. Item Shipped within 24hrs. with tracking. Check compatibility before ordering. Any questions please send Message. Thanks for shopping, Peddle Collectibles