VIPARSPECTRA P1000 LED Grow Light for Seed Starting Vegetables Bloom, Dimmable Plant Lights Dimming Daisy Chain Grow Lights for Indoor Plants Full Spectrum for 3x3/2x2 Grow Tent

Unlike most other reviewers here, I didn't buy these to use in a tent. I wanted good quality led panels for use on a wire rack system for seed starting. I landed on these because they were the only-well reviewed panel I could find which came in the necessary dimensions. I purchased the largest size (11" x 39.4") because it would fit between the upright legs of my wire rack and extend slightly beyond the length of each 3 foot shelf. I purchsed 3. After seed starting I will use these for a planned indoor greenhouse cabinet build that will house my anthurium collection. The build quality of these is excellent and the mechanical output adjustment works well. I started some Jerusalem Artichoke and Apios tubers early this season. I had planned to store them until spring but it became obvious that they were not going to survive until then if I didn't get them planted (They were shriveling and many had become soft with areas of decay). They've been planted in nursery pots about 2 weeks now and the largest plants are already about 6 inches tall. They're going to be blooming by the time they can be planted outdoors at this rate! I've just started my first early seedlings (snapdragons) and will update how well they work for that purpose at a later time. They do get warm, but not so hot that they burn if touched. 3 panels in my 9' x 12' mudroom keep the space warm enough that I won't need heat mats. If you're looking for quality led panels, these appear to function well and are a good value for the price.

The most important things to understand .. with artificial lighting is the language .. this viparspectra p2000.. light is far beyond the capabilities it's limited to 2x4x5 grow tent is what it's claimed to light up correctly efficiently .. u can take it higher I will say this much if the lights pivoted it's would light up a 4x4x6 no problems it puts off plenty of light I see no reason to even run it a 50 percent at any stage I'm a 2x4x5.. period and it will flower and fruit just the same this is a awesome full spectrum light plenty of bang for the buck .. and it deisapates heat extremely well .. all u need is a 6 inch fan blowing down on the light while it's running and a intake fan and filter and exhaust .. but if ur on a budget them inline fans are a waste of money when all. U need is intake and exhaust . Ur good.. excellent light

The VIPARSPECTRA P1000 LED Grow Light has completely exceeded my expectations! From setup to performance, this light is a game-changer for anyone serious about growing. First, the power and performance are spot on—true to the chart with no exaggerations. The light intensity is impressive, and my plants responded with vigorous growth and, most importantly, incredibly dense nugs. It's easily one of the best lights in its price range, hands down! Setup was a breeze, and the daisy-chaining feature is a fantastic bonus. It seamlessly connects to my Vivosun controller and even daisy-chains with my Vivosun light. The compatibility across brands makes this a versatile addition to any grow tent. I also appreciate the dimmable feature, which allows for precise control throughout the growth stages. Whether you’re starting seeds, vegging, or blooming, this light gets the job done with perfection. The driver is awesome, it does not get hot. I can touch it no problem. If you’re on the fence, don’t hesitate. This is not just a grow light—it’s an investment in higher yields and better quality. Highly recommend it! Tips: when hanging lights put them on the ground in the tent first then extend the pulleys to the light on the ground. After hooking both sides up slowly ascend the light. Much easier this way. If you really wanted to you could fit the P4000 in a 4x2 and have 5-6 inches on each side. But this light works.

i'm running it on a smart plug (16 on/8 off), and it provides ample light for my houseplants (500 ppfd about 10 -12" distance at 50% power - measured with photone app) without any adverse effects. i could probably raise it to 75%, but my plants seem quite happy right now. i've mostly used barrina t5s for my plants and they've worked pretty well, but this is a big step up. i also have a mars hydro ts1000 and this p700 is giving it some pretty good competition. also, viparspectra customer service was real cool in answering some questions i had prior to purchasing, which motivated me to pick this up. will probably get another one of these in the very near future. pros: bright af w/ 4 position dimmable brightness (best feature) included accessories (hooks, pulleys) fairly light low heat (like, not hot at all) quality housing/build cons: no daisy chain (totally fine for my needs though)

These lights work exactly like they're supposed to. I've never had any problem. They are the only lights I use for my grow tent. The only problem I had was the bundle came with a set of heavy duty hangers for an extra $8 that I don't need. The light comes with the hangers. I tried to send the hangers back but will only get a $2.21 refund. Mt old man said to just keep it. This sucks! Now I'll have one more unusable item laying around.

Upgraded to this light for starting my pepper plants, and so far, all is good. Setting it up was quick and easy, and I'm very pleased with the suspension system. Adjusting the height is so much easier than my old metal-hydride setup. The power cord is a little on the short side, but I was able to adapt my power system. The light does generate some heat, but not nearly as much as my old setup. The dimmer works perfectly and does turn the light off when set to zero. The intensity of the light is amazing! Even when I had it set to 40%, I had to increase the height of the lamp to protect the plants. The 4 X 2 coverage is good, but I do rotate the plants, so everyone gets equal shares. The light is not being used in a grow tent. I do wish that there was a built-in timer though, but that isn't a deal breaker. I just use my old timer. Some have expressed concerns about some of the red LEDs not working or are dim. Those malfunctioning, or dim LEDs are IR emitters. Our eyes are unable to see IR. We sense it as heat. Overall, I'm very pleased with this grow light! I do wish that it was a little bit lighter weight wise, but I only use a grow light for about 2 months out of the year so suck it up buttercup, lol! It will be interesting to see if everything is the same after all of the plants have been transplanted, the light has been put into storage and set up for next year's season. Will it perform the same? I will update if there are any changes, but at this point I'm very pleased and the plants are loving it! Highly Recommended!

I purchased a couple of the spider farmer lights with the Samsung LEDs after I had the mars hydro light for about a year or so. all of them the smaller 100W variants. Reading around and doing research, looking at product reviews endlessly- exhaustively trying to make the best choice. The mars light after 2 grows ( short grows with autos) 1/4th of the panel failed. Support was responsive but in the end wanted me to pay for a new light with a 20 percent off discount, this is well within their warranty period. The build quality seemed sub-par after getting the spider farmer lights. In the end, the mars light ran really hot ( I had no idea) and heated up a 6'x6' space to the point of needing excessive ventilation. The Spider farmer lights have a good quality feel and build quality and ran MUCH cooler, to the point It was about 90% less ventilation required. I went with them due to the name brand LED ( samsung) lights as everything pointed to them being much better. Overall after receiving THIS light, It kind of put it all into perspective for me. This 240W light outperforms (3) of the 100W lights from Spider farmer BY FAR. It also runs much cooler and is insanely bright, the plants love it! Overall, I am not going to pretend I know anything about the differences in the brands of LEDS and all of that. I do know that these " no name" LEDS on this unit are far superior in terms of cost and performance in comparison to the Samsung bulbs from my perspective. I get much deeper penetration growth, less stretching and much denser "fruit" in the exact same conditions. It's kind of shocking actually. The build quality of this unit is fantastic, the way it hangs and the lower heat it puts off, all of it down to the mean well driver they use. It does run hotter than the Spider Farmer lights, but the plants seem about "50%" more happy with this light. Maybe that is the difference, the efficacy of the light corresponds to the power wasted as heat, I am not sure. But for 240 watts at $130, compared to 300 watts of Spider farmer at $220, the spider farmer loses for sure. The only real thing I cannot attest to is the warranty/support of this brand or spider farmer, as well as the useful life of the products. time will tell, but overall I am glad I am not falling for the " hype" of "name brand" LED units. I see the results, I feel the results, I weigh the results on a scale. These units work fantastic, even better than the higher priced " name brands". Sorry mars and Spider Farmer but I think at this point all you have going for you is your name and all of the hype around the " Samsung" LED's. If I can pay half the price for twice the light and "fruit", I don't see why you couldn't either.

I am beyond impressed with this light. (And so are my plants!) The adjustable output and ability to daisy-chain lights together is awesome. It is very well built and has a sturdy overall design. It covers a very good area for the size and price. Highly recommend this light! Update: I'll continue to rave about this light! My Chinese Hibiscus was looking terrible under my old grow light. It was hanging on for dear life.. but with this new light - Look at this flower!! Within weeks I had tons of new flower buds!! No fertilizing, no extra steps, nada - just the proper lighting! Get one of these for your plants that require bright full sun.