VIPARSPECTRA 600W LED Grow Light, with Veg and Bloom Switches, Full Spectrum Plant Growing lamps for Indoor Plants Veg and Flower(IR Included)

no way this can replace a 400w hps,dont even think it can replace a 250w hps, wish i sent it back but the 30 day return ran out,i"m going to sell it on ebay anyway, waste of time and money, i had a another 240w led that out powerformed this led,total rubbish.

Bought it, opened it, turned it on and put it straight back in its box to be sent back. The light is not full spectrum as advertised and the fans were so noisy my neighbours would have thought I was hacking Moscow. In my opinion you'd be far better off spending the money on a decent traditional HPS unit although I ended up spending a fair bit more on a proper horticultural LED light from GN UK (Telos 0008) which I am really happy with. The Telos 8 light is a proper full spectrum light (light appears white, not red and blue) and totally silent which is important for me. I'd recommend that if you're looking for a proper LED light, forget the Chinese manufacturers, save some money and buy either a GN UK light (British) or a Sanlight (Austrian). Anyway I learnt my lesson, buy cheap buy twice!

As nothing more than a hobbyist I cannot say whether or not my experiences would scale-up successfully? But having run (many year ago) a single 600W hps, what I can say is that a pair of these full spectrum, 300W jobs run much cooler and [thus] use a lot less juice. In a space of approx 8' x 4' x 4' the temperature varies through 19C - 26C. I don't have numbers for the hps but I am certain they were higher.I couldn't be happier.

Arrived quickly, and well packaged, in a plain box.Light works well, but has far too much blue for flowering.I thought growth was ok, but i just replaced with a mh, and growth just exploded.These panels are ok, but will not match hid lighting.To edit, light has been used to supplement hps. Its doing a good job of that. I may buy some more.2nd editBought a second one. I don't use these on there own. They are used to supplement hid lights.On their own, they were good at raising seedlings, and cloning.But for good floweing results, you would need at least 4 of these, for every m2. The use full footprint of the 2 units in the picture, is 1.5ftx1.5ft. You will get better results with hid at the same wattage.I like them for the ability to boost the blues and reds, as needed, with mh and hps.3rd edit....Randomly started to receive interference, down my broadband line, and so did my neighbours. After 2 weeks of tests by BT, they finally found one of these panels giving out rf signals, with a spectrum analyser.

I have used this lamp for around 3-4 months now and am very impressed. Although the LED unit isn't quite a powerful as a traditional sodium lamp it has given me good strong plants with a decent amount of flowering. compared to other plants grown under sodium they are probably 25% smaller but the quality is equal. It uses less than half the electricity of a 600w sodium lamp but will last for 10,000 hours. It is quite noisy with both veg and bloom switched on but a small price to pay for the electricity saving and the fact there are no bulbs to replace. Overall very satisfied with this and highly recommended for the indoor grower.

Can you get better performing lights for the money now in 2019? Yes you can.At the current £200 price this light is not worth it but my review is based on the price I paid back in early 2019, I'm not sure why these have become more expensive.If you are a new grower and are looking for a decent starter light and you can get this with a good discount it is perfect for a 60x60cm grow space. Some may say it's over-powered but the PAR rating drops very quickly as you get to the edges with a real hotspot in the centre.In my 13 months using this light I found much bigger of a grow space will need a more efficient light for consistent results, end of.I've finished 5 grows with this light and have found that the light is performing as well now as it did a year ago which is reassuring. It's by no means quiet though, it makes a noticeable background hum but not enough to disturb you at night.This was my first grow light and I've learnt so much while using this bad boy, it's been everything I needed and more. With LED technology moving forward so quickly I'd hunt around for more efficient lights if you want to spend £200 but for £100-125 it's great.

As per the notes of another buyer, I knew the moment I switched it on that I was going to have to replace the original fan such is the level of noise it generates. Thankfully it's a standard 120mm PC case fan, so the original went in the bin and I put a Noctua NF-S12A ULN in which is basically silent, with the bonus that it moves more air than the original. The case is well-vented so can handle a fan with a high angle of attack on the blades as opposed to relying on RPM to move the air.Aside from that issue, seems like a great light to get a head-start on the tomatoes before it warms up enough to put them outside. Minus 1 star for the terrible fan.

This light, equivalent to a 150w HPS is just perfect for my 60x60 tent.Noise level acceptable, I can easily sleep or just not be annoyed with it running in the same room.You can easily place your canopy 10 cm away from the light without the plants becoming stressed.The heat it produces can be easily evacuated with a single 10w fan.Very happy with my purchase