This listing is for the 350w LED growlight from Dr Growrite. It is made with all high quality 3 watt chips covered by 60/40 degree lenses. Also has an advance cooling feature. We use slotted aluminum boards, and high powered 7 blade brushless fans with a very powerful pitch for the best possible cooling while still being alot quieter than the standard Made in China lights that are being sold on ebay. The competition uses a piece of sheetmetal, and blows the fans on them. The reason we use aluminum even though it is more expensive than sheetmetal is because it does not retain heat like metal, and the slotted boards allow better air circulation which guarantees the electronics will never overheat. We also use snap conectors for the wiring which alows for easier repair if nessecery, as well as a different high qulity power supply for each color to guarantee none of the electronics are being overworked. We take great pride in our units. We have been doing trial and error research for7 years now, and we only started selling units less than4 years ago. We have bought and studied over 60 different units, and found that only about 1 out of every 10 had any real effect on plant growth at all. We can deffinitly say that 1 watt chips are to weak for really good plant growth. Now for a long time we felt that the blue 470nm, the red 630 nm, and the other red 660 nm was all the light needed for both vegitation, and flowering, but in our most recent studies in creating an LED unit that is good for both growing, and flowering cycles we have learned that adding broad spectrum white LEDs to it helps not only with the vegitation cycle, but also helps with the transition period from veg. to flowering. Now with these new units we feel that we have perfected the art of growing using LED lights. Also we can offer prices that are competitive to the cheap Chinese lights because we make them rite here, and dont have to pay huge shipping fee's as well as the middleman markup, and rite now we are still a small company, and do all the work our selves. Anyone who is new to this I urge you to do your research. Dont buy lights with unnessecary colors added some of them are toxic, and are only put ther so that they can show high luminous flux levels. Rating an LED grow light on lumins alone is not a good way to rate the light. It should be rated on its (P.A.R.) photosynthetic active radiation. Any seller who rates there LED lights on lumins does not know how to grow. With P.A.R. value you can know the penetration grow value the light has to the plant. For example a 1,000 watt HPS has under 1,000 P.A.R. value. That is because while making alot of lumins only 15% of the light is actually being used by the plant at most. We wont use any sales tricks on you. We just promise a high quality unit that is built with care. I have action spectrum pics above, and also a pic sent buy a happy customer in California of his garden under our lights. At the bottom of my listing I will have a chart that describes how light affects plant growth. Now let me describe the light itself to you.

We are not a hydroponics store. We are LED growlight Distributors. NO BRIDGELUX LED's. The listing is for the newest most advanced 350 watt 4 band LED growlights made with 3 watt chips and 40 degree lenses. The actual power draw is about 220 watts. The reason for the the ower draw than the LED's are rated at is because of heat dissipation. If more power is pushed through these chips it will cause them to overheat, and short out. Plus this will not creat more light penetration at all. This is why we can offer one of the longest warantee's available. Because we build them correctly.These lights are made from all very high quality materials. They are deffinitly the most advanced LED grow light on Ebay. The 4 bands are blue 470 nm., red 630 nm., red 660 nm,. and white 6,000 kelvins, which is a broad spectrum ranging from 420nm all the way to 615 nm. The breakdown is 18 white 6,000 K, 31 blue 470 nm, 35 red 630 nm, and 35 red 660 nm, 119 3 watt LED chips in total, and they have a maximum recomended footprint of 3'x3'. They have a P.A.R. (Photosynthetic active radiation) value of 2998 at 24", with all usable light. We do not add infrared, or ultraviolet because they are useless to plants, even though they can make the light meter turn very high numbers, they show no beneficial value to plant growth. Some Infrareds can actually harm the plants. The units also have a very advanced cooling setup, and run quieter than most less powerful fans, and being brushless they are not only quieter, but also have a much better lifespan. We also have a unique smoth start function which slowly powers the unit up. What this feature does is eliminate hard startups which stress the LED's, and usually will cause part of the board to burn out in less than a year. We offer a 3 year warantee on our products from all manufacturers defects.(AND WE HONOR OUR WARANTEES). Also we are here to answer questions for you whenever you have one, and we will also give you info on how to build your own Co2 system using household products. We dont just forget about you after the sale we want to help you have the best garden you possibly can. Its also important to know that you may need to decreese your nutrient levels. We recomend starting out at half strength, and working up or down from there. Below is a chart that will tell you how light affects plant growth.

Range in nanometers How Light Affects Plant Growth

200-280 nm----------- UVC Ultraviolet range which is extremely harmful to plants because it is highly toxic

281-315 nm------------ Includes harmful UVB ultraviolet light which causes plants colors to fade

316-380 nm------------ Range of UVA which is neither harmful or beneficial to plant growth

381-400----------------- start of visible light spectrum. Process of Chlorophyll absorption partialy begins. UV protected plastics block light below this range.

401-520 nm------------ This light includes violet, blue, and green bands. Peak absorption by chlorophyll occurs, and strong infuence on photosynthesis occurs. (PROMOTES HEALTHY VEGITATION)

521-610 nm------------- This range includes green yellow, and orange bands, and has less absorption by pigments.

611-720 nm------------- This is the red band. Large amount of absorption by chlorophyll occurs, and the most significant influence on photosynthesis. (PROMOTES FLOWERING & BUDDING)

721-1,000 nm---------- There is very little to no absorption here. Flowering, and germination is slightly influenced on the low end, at the high end of the band is infrared which is heat.

1,000 + nm------------- Totally infrared range. All energy absorbed at this point is converted to heat, and is completely useless to plant growth .

We keep our add simple because it is all honest. We do not feel the need to over explain or down talk other sellers. Even though there is other sellers lying about us, and going through extreemly rediculous methods to convince you that our lights are less than they really are especially one other seller here on Ebay the most (pro) We do not feel the need to sell our products by telling you what the other guys can't do. We will just tell you what ours can do. We are not intimidated by anyone. Simply because we know our lights really do work, and we know how to grow. It is actually very flattering to us that they are so intimidated by our lights that they would resort to such childish methods to try to harm our business. We have bought alot of the lights available on ebay to study them, and we can honestly say be careful. There is alot of shady sellers out there. Please be aware that Cree is a very expensive brand of LED. If someone is selling a light that they claim is made with Cree, but the price seems very low than they are lying to you. We are not trying to say you should only buy from us, but if you are new to indoor gardening, we highly recomend that you do some research, and ask questions. Alot of the lights look very similar, but believe me it what is inside the lights that matters. It is deffinitly possible for us to use cheap materials, and be able to sell for alot less, but we are trying to build a reputation for quality not quantity. We are available in some stores. Unfortunatly I can not disclose the retailers because of the confidentiality agreement we made with them, and they are being sold under a different business name in stores. The retail price on this unit is $699.99 - $799.99. If you have any questions please feel free to ask. We will answer you within 1 business day. Also if you are looking to buy a large quantity please send us an Email for price arangements. Our goal is to make all of our customers happy. Also we will always leave feedback for buyers it is setup to automatically post immediatly after the buyer leaves our seller feedback. It is setup this way because our whole reason for selling on Ebay is to build a reputation, and feedback is how we do that. There is alot of people who dont leave feedback, after we provide them with exellent service, as well as a high quality products. Good luck to all newcomers, as well as veterin growers. Also as far as energy savings. Using this light in place of a 1,000 watt High Pressure Sodium light will save between $500.00, and $1,500.00 a year on your utility bill, also there will be no need to cool the room down, so you will save on that as well. THAT IS HUGE.

Good luck everyone. Remember we take care of our customers all the way. When you purchase from us we will stay available for questions. Any questions you may have. We are Botonists, and Electrical light engineers, and our specialty, and passion is in this field. We want you to be succesful with your crop.