Which one to choose guys?? Viparspectra p2000 2024 model? Or the Jackson nemesis 250 by grow the jungle??

Personally I would search for a light with Samsung LM301H diodes. You get better bang for your buck. But between these two, I think I would choose for the Viparspectra.

Which One Should You Choose? For Smaller Spaces (2x2 ft or 3x3 ft): If you're working with a smaller grow tent and want a cost-effective, energy-efficient option, the Viparspectra P2000 is a solid choice. It will provide great light coverage for a 3x3 ft flowering area and is generally easier on the wallet. For Larger Spaces or More Intensity (3x3 ft or 4x4 ft): If you have a larger tent or want a more powerful light that provides advanced features like dimming and a customizable spectrum, the Jackson Nemesis 250 is worth considering. It's more suitable for larger grow areas and would give you more control over your grow environment, but be prepared to spend more upfront. Ultimately, your decision depends on the size of your grow tent, your budget, and the features you value most in a grow light.

Viparspectra for sure, its the better light. 💚

"any lm301 run .2 watts per diode will die faster than advertised. " -- left an important word out. Any lm301 run hotter than .2 watts per diode will die faster than advertised."

jackson nemesis 250w 560 umol/s PAR... they are lying about efficacy. It is not 2.6 umol/J. It is only 2.24 umol/J of par so it's a low-end efficacy light. As long as it is very cheap this is okay. At 250w it won't generat too much heat for a small room with a tent in it. It won't last the advertised 50k hours of use before it dims to90% of original intensity. it will dim faster due to lower efficacy / higher heat / more watts per diode than the manufacturer tests the diodes and for which that 50k hours metric is based upon. Looks like it is a quantum board or something similar? Also, less than ideal, but the comparison is also a QB so it's a wash in this regard. given the diode count this doesn't make sense... maybe they are just bad at properly measuring their own light? Seems to have a decent diode count and should be higher efficacy. P2000 - can't find information i trust about umol/s and efficacy. the key to any samsung lm301-based led grow light is running them as close to how samsung tests them as possible. Otherwise, you get less longevity, more heat, and higher bills to produce the same amount of light per day. Anything over .20watts/diode is running that diode hotter than samsung.com spec sheets - these are the spec sheets that matter as many, many led grow light manufacturers lie through their fucking teeth, but it's easy to spot check them for honesty. The fact that viparspectra is not advertising number of diodes, i'd wager the jackson nemesis is using a better ratio. As long as price isn't too significantly different, i'd always go with the fixture that is running at a lower wattage per diode - this assumes equivalent heat sinks and diode distribution etc. any lm301 run .2 watts per diode will die faster than advertised. .2-.25w/diode will be the 2.7-2.9umol/J tier. Binning of diode will be cause for some stratification of ~10% range. the mid teir will be around .3-.4 watts per diode -- with these you often won't get the best binning ("SK" diodes in 3000k,for example vs "SJ" - can see model number variations), but if you did, you'd still be up near 2.8-2.9 umol/J efficacy, but they'd still be run hotter and dim faster. Then i wouldn't buy any light higher than .4-.5watts per diode. these are lumps of shit. I won't specifically state where that line should be drawn but somehwere around there -- efficacy falls off faster and faster the further from .2watts per diode. You pay for efficacy. It is directly realted to longevity and electricity costs. Don't get caught up in gimmicks like UV diodes... those are a waste of time to run all the time and 2x as useless and stupid to run uv in vege phase. If a light has them, no big deal, but don't buy a light for that reason. The far red diodes are good to have. If it focuses on "ePAR" that's worthwhile to value, but nothing to overpay for. Better to teach a person to fish than just to hand them some fish. The othr thing to know -- this is mostly about electrity and heat produced. If you give 35 DLI with either light, you'll have similar results assuming any environmental differences caused by the variations between the lights is mitigated properly. Don't worry about quality. If it produces 35-40 DLI for your area and ambient co2 conditions, yield and quality will be equivalent, all other factors remaining the same. you'll want stronger lights if you add co2.

Viparspectra for sure. You maybe also check the KS-series if you dont have other lamps, if you wanna stay at that budget i would also check the xs2000, its a newer model. I would buy on amazon, but if you wanna buy at viparspectra website you can use my code: MMP.

Hi Ich habe seit 2,5 Jahren die P2000 und bin sehr zufrieden mit den Ergebnissen egal ob Autos oder Photos. Die andere Marke sagt mir nichts. P2000 kaufen und Grow starten 😊.

I have nothing but good things to say about Viparspectra. I use a p1000 to test out genetics and it works great. I will leave a link to a test grow I did. You can see what type of buds it produced. Buds were nice,tight and frosty. I have never used the other light you're asking about. growdiaries.com/diaries/226213-purple-shot-grow-journal-by-cameltoe/week/1342339

I don't like UV in the main light, UV didoes die out much faster and just create a extra hazard in indoor grows for yourself/eyes. I don't think this would be an issue, but if they are wired weird and one of the UV leds goes out, does it take out other functioning LED's or will the one just stop working? as they will 100% die off before the other spectrium LED's do. Their is a guy on youtube who does lighting reviews. migro, I like how he does things. not a lot of bull shit. www.youtube.com/watch www.youtube.com/watch Now they may not be the current models but should give yea some insight onto it. The viper one has some detailed reports on how the light performs and I don't see that with the Jackson one... their entire webpage looks like a ed hardy jacket and I think that's what they are mainly selling. the logo. Would not trust any of them to advertise the correct umol/j rating on their page all light manufactures lie. Overall I'd lean towards Viper but do the work for yourself and look into it.

I would choose the Viparspectra. But make sure to check the Chinese competitors, takes a while to get them, but they cheap and the chips are made in Taiwan aways no matter what lamp (at least if it should be top notch).

I’d get the one that has the best umol/j rating.

Stay away from viper spectra the spectrum on their lights is not the greatest. Very little blue light so it won’t do seedlings or veg very well at all also. I had the 2x2 version from them awhile ago and my plants just didn’t grow well under them. Either go with Mars hydro Spider farmer Medicgrow Definitely the best for the buck without sacrificing grow quality like there is definitely way better lights that are expensive af like Black dog grow lights Fohse grow lights

Are looking for a good 2x4 grow light? Let me give you a suggestion you probably have not seen. Look up the medicgrow mini sun 2 inch the 500w version. By far the strongest light per sq feet on the market you can get 1000ppfd evenly across 2x4 grow space. Anything between 40in from the light to 24on from the light the light has almost a perfect spread across 2x4 area litterly every corner gets the same amount of light as the center the tent