VIPARSPECTRA DIMMABLE PAR450 Grow LightOptimal Full Spectrum for Indoor Plants Veg and BloomWelcome to the next generation of Dimmable PAR450 LED Grow Light, is ideal for all kinds of indoor plants veg and flower at all growth stages.VIPARSPECTRA spectrum has been developed by indoor growers over many years of careful experimentation and testing. You will see an increase in quality by growing bigger flowers that are dense and completely coated in resin.Three separate DIMMERS for each light spectrum and intensity, so you can adjust for each growing phase according to your plants' need.We stand by our good-quality products and your satisfaction is 100% assure.This light includes IR (Infrared) LEDs which look dim, they are not faulty LEDs,which promotes cell division, helps germination, leaf building and flowering.Vegetative Coverage at 32": 2.5x2.5ftFlowering Coverage at 24": 2x2ftExcellent PAR Output and PenetrationVIPARSPECTRA PAR450 LED grow light is scientifically engineered to keep the balance with high PAR/Lumen and suitable Coverage.The secondary optical lens magnify PAR and increase canopy penetration by up to 200%.Outstanding Heat Dissipation SystemThis PAR450 Light comes with revolutionary aluminum cooling heat sinks and high speed silent front-fans, run 70% cooler than (HID) lights silently.Using SuggestionsPlant Stage--Height(above the plants)----Hours----Brightness(B/W/R)Acclimation period ---40"-44" ---10 on /14 off---40% B/40% W/15% RSeedling/germination--36"-40"--12 on /12 off---60% B/60% W/30% RVegetative stage----28"-36" ---18 on /6 off----100% B/100% W/60% RFlowering stage---20"-28" ---12 on /12 off---100% B/100% W/100% R* Please observe your plants regularly, adjust the height and brightness to meet your plant's need.