The Worlds Most Powerful Single-Ended Grow Lamp! Consistently Tested Over 2,380 umol! (Verified By UL) Must be used with high-frequency electronic ballasts (70-110kHz) Par Pro 1,100 Watt HYPER ARC High-Pressure Sodium lamp delivers a staggering 2,380 umol on the Galaxy 1000 Watt Turbo setting! The HYPER ARC lamp has the ideal 2,000 degrees Kelvin Temperature for the best results during the fruiting and flowering phase. The industrial construction of the Par Pro HYPER ARC allows the lamp to exceed all micromole levels currently offered in a single-ended design. With attributes of long life, reliability and high efficiency, this lamp is an excellent choice for all indoor horticulture purposes. Underwriter?s Laboratories (UL) tested Par Pro?s newest Hyper Arc 1,100 Watt lamp and said it was the most powerful 1100 watt single-ended HPS grow lamp they had tested in history. Consistently testing at 2,380 µmol (micromole), the Hyper Arc is a 1,100 watt grow lamp that features a 400-volt arc tube and TT65 European glass jacket that generates 177,000 lumens! A remarkable breakthrough in horticultural lighting technology, the fact Par Pro has been able to produce this in a single-ended E39 lamp design will be a dream come true for the thousands of growers utilizing single-ended reflectors. The Par Pro Hyper Arc?s PBAR Flux is even more incredible, 2,688µmol! ?PBAR? refers to Plant Biologically Active Radiation which is measured from 350 to 800 nm in the light spectrum. This value recognizes that plants have photopigments other than chlorophyll that is sensitive to a wider range of wavelengths than chlorophyll is. HYPER ARC Specifications 1,100 Watts Ideal 2,000 Kelvin Spectrum (Fruiting Flowering) 177,900 Lumens Standard E39 Mogul Base (SE Lamp) Oversized 400 Volt Arc Tube Uniform TT65 Outer Jacket PPF - 2,380 umol/sec PPF refers to Photosynthesis Photon Flux. This particular wavelength range (400-700 nanometers) has been idenified as important to the photosynthesis process PBAR - 2,688 umol/sec PBAR refers to the Plant Biologically Active Radiation. Plants have photopigments other than chlorophyll that are sensitive to a wider range of wavelengths (350 to 800 nanometers) than chlorophyll. Luminous Flux - 177,900 Lumens Luminous Flux represents the measured radiant power of the test lamp in units of lumens from 380 to 780 nanometers. Free Shipping rates apply to the lower 48 contiguous states. Contact Us to get shipping cost to your area if not in the lower 48 states before purchase. We ship all items discreetly Whether you are a novice gardener or a mad scientist in the greenhouse, you will find a plethora of inventory and knowledge at the Spokane Organic Hydroponic Supply centers. Our first store opened its doors in 2006 when Paul and mother Susan, both avid and life-long gardeners, joined together to share their passion and gardening experiences with the Spokane community. In 2010, Susan moved on to pursue other endeavors while Paul continued to expand the business. Each of our two stores employ experienced staff members with traditional garden expertise and modern industry knowledge. With real-life experiences, our plant experts know the challenges of outdoor and year-round gardening and strive to help customers eliminate avoidable mistakes. Our alternative and earth friendly stores we have created will leave you with a sense of empowerment to develop your own efficient methods of growing and caring for plants. We look forward to your visit and hearing the plant stories you have to share with us! We ship daily Monday - Friday. All orders will be shipped within 3 to 5 working days. Most will go within 24 hours. You will automatically receive a tracking # via email once we have shipped your order. All domestic orders will be shipped by UPS, Fedex ground, USPS priority mail or USPS ground. If you need to use a special carrier i.e. PO BOX w/ USPS, please email us and let us know. We will only ship to the address provided during payment. We are not responsible for any packages that are lost or damaged if insurance is not purchased. Shipping and handling rate is fixed and non-refundable. Free Shipping rates apply to 48 contiguous United States. Contact us for shipping cost to your area. No returns No returns are accepted on any nutrients and fertilizers Be sure the item is what you want because of the no return policy Pictures may be different then product sold We ship all items discreetly Satisfaction : Discreetly labeled, Professionally packaged, shipped as fast as possible with care read the feedback for proof. Our prices are competitive but the service is Priceless! We know how to ship liquids with no leaks and 100% satisfaction guaranteed. Your satisfaction is very important to us! If you have any problem with your order, please do not leave negative comments. Please Contact us ... we will help you out! In the unlikely event that the item is sold out from our stock or on back order, we will contact you to see if you want to wait a few days or we will refund 100% of your money. YOUR choice. Occasionally items sell from our brick and mortar store front before we are able to pull down our listing or adjust quantities. We try our best to fulfill these orders in a timely manner if possible. These cases are very rare, we will let you know as soon as possible and refund your money.