KOSCHEALKS1200 LED Plant Grow Light Full Spectrum Daisy Chain with LM301B Veg Bloom Double Switch for Indoor Plant Seedling Flower and Fruiting to Provide Suitable Spectrum Quiet Built-in Fan 130W±5%

First off, lets bust some myths being touted here...1. It is a 2000w EQUIVALENT lamp - meaning by using its 200 odd watts, it is producing the same amount of light as standard bulb drawing 2000 watts (which for those lamps means that 1800 watts of heat is being pumped out - so its more of a heater than a light, whereas this is a light). When an HPS light goes out, the temperature in a grow tent will plummet, due to the loss of all that heat. An HPS by the way is more efficient than a standard bulb but only by a few percentage points, so still the majortity of your electricity is being radiated as heat not light.2. As far as your plant is concerned it is FULL spectrum - it provides all the useable light the plant needs, the stuff a plant cant use in 'daylight' goes to waste - this type of light is not wasteful in that respect. When you look at the leaves under the light, they appear black, because all of the light falling on them is being 'absorbed'.3. The important thing about light intensity is lumens - this is not quite the 24000 of full sunlight, but its a lot better than most bulbs and importantly its all in the spectrum areas plants require for photosynthesis, so no wastage. So no one here is lying about ratings or wattage or anything to do with the equivalency of the light - it is just that EQUIVALENT.So I am using this to light an area 120 x 60 and it is providing 'daylight' light levels equivalent to the midsummer in the tropics over that area. My seedlings react by growing exactly as they would in the wild, sturdily and quickly. I have chillis up in 4 days, cactus in 3 and some succulents inside 36 hours - none are showing stress, none are getting 'leggy'. No sure if I will use it to grow a crop to maturity, though I feel sure it would easily do this, but for me this is more to do with available space and the fact that I will grow stuff on in a conventional greenhouse afterwards. This allows me to start early for long season crops in a dark garage with little more than this light, a grow tent and some bottom heat.So for its cost (about the same as an HPS with a ballast and gear) it is using 20% of the electricty - requires none of the ventilation (which just blows out the heat into a cold void, rather than being able to seal it in with the plants and lights up and extinguishes instantly on my timer. All in all excellent value for the price.31 Jan 2024 - I now have 5 of these lights - the original 2000w variant used in the germination tent and another 4 x 1200w lights, daisy chained in a larger growing on tent. All are on timers, providing 14 on and 10 off or 16 on and 8 off. Again Chillis are up inside a week and growing away well. Tomatoes the same and all of my cacti sowings are showing no signs of stress.

At last a full spectrum light that is being honest about what it does. I have the 1200w version. It's smaller than others I have owned because it uses the amazing Samsung led technology. This means you get more light from less space. This means it generates less heat and the fans don't have to work as hard. I know some people have said they found it loud but I don't think it is. I suppose everyone will have a different view on that. I can see why they give a 3 year guarantee. Its well built. I have tested it using a light meter app and it delivers all the figures they claim. I cannot fault this unit for quality and value. Wish all purchases on amazon where this easy.

I am using to grow rice in an aquarium; top marks for brightness.Well constructed unit, no noticeable heat emitted.The light, even indirectly reflected, is too harsh to be around for more than a few seconds and I found it visually disturbing and unsettling; but then it is what it is! I have improved the situation by constructing a hood to cut out much of the unwanted spread of the light, but will always turn it off if I am nearby for any time at all.

I bought this for growing Lithops seedlings through the winter months. As they are in 5cm pots it will cover a lot of pots. I am very pleased with it although I have only had it for 1 week so too early to say if the plants like it. It would have been helpful if there had been a bit more advice & information on the recommended height above plants. Obviously the higher it is the larger area it will cover but the light intensity will decrease. There is no information to advise on this so I guess it will just be trial & error. Packaging was excellent as was delivery time. Very easy to install in minutes provided you have something to hang it from. If teamed with a time switch it looks after it self. There is a slight sound from the fans but as mine is in a greenhouse that is no problem.