I have an xs4000 in a 2x4 lol can't crank it up to 100% it's kinda overkill but fills tent evenly so all get good high intensity so good flowers. I've only been able to get it to 75% at 18 to 22 inches any more seems to start burn leaves or start to droop down. Definitely better off with p4000 or xs4000 in a 2x4 if your experienced i also have a mars sp3000 in 2x4 that works really good too
Just make sure yall research before buying viparspectra, or you could end up with an older version or something shady. I decided to pass up viparspectra for grow light science..
What I want to know is the true comparative watt for watt. I would have liked to have seen the xs2000 at 100% compared to the p4000 at 50%. Better yet, determine what intensity the p4000 has to be at to replicate the xs2000 from the same height, then do the math. I feel the p4000 would shine there, and temps much lower.
I bought 3 Viparspectra lights ks5000 ks 3000 and P600 I'm not sure i like them Veg they seem ok But flower they seem be be not so great The old HPS does make the plants grow faster and more healthier. In my opinion.
Lol got a hortibloom evo 720 in a 1x1.2 m2 that's 720 watts. Remember these light can turn down go for the hightest output led you can as the efficiency gos up and so does the price.
Even at 12 inches, the e200 only gets to 600 pfd. Isn’t the goal 1000? Will this be enough light? Can i put it even closer than 12 inches? Old grower learning about led.
600 is about the maximum you want without CO² supplementation. For maximal leaf surface transpiration rates you want 1200ppm of CO² and as much light as your plant can handle. Look up the Fluence Photobiology Guide at: fluence.science/wp-content/uploads/2018/11/Fluence-Photobiology-Guide-2019.pdf for a good overview.
Some you can put closer than 12 inches, but red wavelengths cause more "burn", and it depends on the exact wavelengths, stage of flower, and what the plant is used to. 1500 is full sun so it's worth knowing what is enough and what is too much - and how that relates to a plant's growth stages.
Studies quoted in Cannabis Business Times' recent Light Report indicate that providing over 1000 PPFD increases product by 1% for every 1% of increase of light, up to about 1800 PPFD. Well -managed plants can handle an amazing amount of light. Go for the most wattage you can afford.
@@kmikaz2.029 Plants will tolerate amazingly high PPFD if given a proper ramp-up and plenty of water and nutes. The company mentioned in the Cannabis Business Times report works flowering plants up from 1000 to 1800PPFD. I must say co2 was not discussed, so maybe it is used. Still, high PPFD lights pay off. 1000 to 1500 is easily reached with lots of the led lighting available these days.
@@johnpool5216 Hey,what would be the best led for a 2.5 feet x 6.5 feet space,would you choose 2 viper spectre p4000 or 2 xs 4000 or 1 mars hydro sp6500 ?
@@SSH01 Looking at the PPFD footprint of the lights you mentioned, I believe two Vivarspectra XS4000 lights, end to end, will give you the spread you need for that size tent.
I hear some people saying the p4000/ whole p series is not very good for flower. I was planning on using my 2 p4000 in flower as well as veg. Should I get a better light for flower? Also some people saying this light gets way to hot for an led. What do you think?
Last year I Purchased 5 oscillating 6 inch fans. After receiving them 2 of them did not work So I contacted growbuds and they replaced the 2 defective ones. A few days later another 3 stopped working And I never received any response from them. After numerous emails I still did not get a response because now I have 7 fans that are not working. I would never buy anything from them again. I also purchased 6 spider farmer lights from them Hopefully I will never have a problem with them. Dealing with their customer service is a total nightmare. If you need to purchase anything please I beg you go elsewhere.
Because you don't know brand names other than Samsung and Mean Well, it means anything else is lower quality? Maybe it means you don't know what you're talking about!
The p4000 in a 4’x2’ is a killer if you know what your doing. Better for 3’x4’ awesome video tho. Keep ‘em coming
I have an xs4000 in a 2x4 lol can't crank it up to 100% it's kinda overkill but fills tent evenly so all get good high intensity so good flowers. I've only been able to get it to 75% at 18 to 22 inches any more seems to start burn leaves or start to droop down. Definitely better off with p4000 or xs4000 in a 2x4 if your experienced i also have a mars sp3000 in 2x4 that works really good too
my p4000is doing fairly well in a 4x4
I just got the new viparspectra XS2500pro it’s amazing. Best light I’ve used
Awesome, and timely video, THANKS! Would have thought you might have included the MARS HYDRO TSL2000.
Very informative for the new grower’s
Just make sure yall research before buying viparspectra, or you could end up with an older version or something shady. I decided to pass up viparspectra for grow light science..
The efficiency of these lights are kinda low.
Don't you think ?
In the 1.6 range is low.
if you are interested in heat management, the simplest rule is for every 1Watt of energy being used = 3.41 BTU's
Should I use the new Viper spectra with the lenses.
What I want to know is the true comparative watt for watt. I would have liked to have seen the xs2000 at 100% compared to the p4000 at 50%. Better yet, determine what intensity the p4000 has to be at to replicate the xs2000 from the same height, then do the math. I feel the p4000 would shine there, and temps much lower.
Would be interested to see side by side for the p2000 at 100% and the p4000 at 50% power
I bought 3 Viparspectra lights ks5000
ks 3000 and P600
I'm not sure i like them
Veg they seem ok
But flower they seem be be not so great
The old HPS does make the plants grow faster and more healthier. In my opinion.
i think i watched an episode of homegrow tv where he used a vipar light and won some cannabis cup but i could be wrong..... so, user error?
I have the P2000 and the XS2000 side by side in a 4x4 foot area. Both lights do a very good job.
Sameee i got the p2000 and the pink light for $100 on offer up! a steal! What they looking like now? mine are on my channel
If the light produces too much light in the center ,could up just raise it up a little higher?
Me, I believe it's wasting time to compare LED grow light bar style vs. quantum board; non-amazon vs. amazon.
That is why you are here.
Your efficiency seems extreme low - under 1,7 for "professional" equipment is quite bad?! Other tests with Vipraspectra show about 2!?
Great video 👍
In my 2x4 I'm using a P2500 and a P1500 viparspectra and their crushing it.
Yes? I got a 2x4 and a 4x8 veg and flower tent respectively and I want to get the best coverage so checking how many of which vipar I need
Lol got a hortibloom evo 720 in a 1x1.2 m2 that's 720 watts. Remember these light can turn down go for the hightest output led you can as the efficiency gos up and so does the price.
Bloom Plus xp2500 would literally beat any of those quantum boards for a lot cheaper.
Even at 12 inches, the e200 only gets to 600 pfd. Isn’t the goal 1000? Will this be enough light? Can i put it even closer than 12 inches? Old grower learning about led.
600 is about the maximum you want without CO² supplementation. For maximal leaf surface transpiration rates you want 1200ppm of CO² and as much light as your plant can handle. Look up the Fluence Photobiology Guide at: fluence.science/wp-content/uploads/2018/11/Fluence-Photobiology-Guide-2019.pdf for a good overview.
Some you can put closer than 12 inches, but red wavelengths cause more "burn", and it depends on the exact wavelengths, stage of flower, and what the plant is used to. 1500 is full sun so it's worth knowing what is enough and what is too much - and how that relates to a plant's growth stages.
Oh man, Your supposed to use the P2000 in a 2x2 .
You can, but that’s not it’s intended purpose
Studies quoted in Cannabis Business Times' recent Light Report indicate that providing over 1000 PPFD increases product by 1% for every 1% of increase of light, up to about 1800 PPFD. Well -managed plants can handle an amazing amount of light. Go for the most wattage you can afford.
1800ppfd whitout co2 Will burn your plant down
@@kmikaz2.029 Plants will tolerate amazingly high PPFD if given a proper ramp-up and plenty of water and nutes. The company mentioned in the Cannabis Business Times report works flowering plants up from 1000 to 1800PPFD. I must say co2 was not discussed, so maybe it is used. Still, high PPFD lights pay off. 1000 to 1500 is easily reached with lots of the led lighting available these days.
@@kmikaz2.029 I went back and re-read the article- the grower providing 1800PPFD is also providing 1200PPM of CO2 to their plants.
@@johnpool5216 Hey,what would be the best led for a 2.5 feet x 6.5 feet space,would you choose 2 viper spectre p4000 or 2 xs 4000 or 1 mars hydro sp6500 ?
@@SSH01 Looking at the PPFD footprint of the lights you mentioned, I believe two Vivarspectra XS4000 lights, end to end, will give you the spread you need for that size tent.
i have 2x viparspectra V300's and a XS 2000 in a 1m x 1m x 2m
I hear some people saying the p4000/ whole p series is not very good for flower. I was planning on using my 2 p4000 in flower as well as veg. Should I get a better light for flower? Also some people saying this light gets way to hot for an led. What do you think?
You'll do fine with the 2 p4000's keep what you got they'll do great!
@@maxell330 Thanks man I decided to order 4 more of em after getting some youtube comments back.
Awesome
Last year I Purchased 5 oscillating 6 inch fans. After receiving them 2 of them did not work So I contacted growbuds and they replaced the 2 defective ones. A few days later another 3 stopped working And I never received any response from them. After numerous emails I still did not get a response because now I have 7 fans that are not working. I would never buy anything from them again. I also purchased 6 spider farmer lights from them Hopefully I will never have a problem with them. Dealing with their customer service is a total nightmare. If you need to purchase anything please I beg you go elsewhere.
The pro did better tested on the migro channel
Better Oversized‼️‼️‼️
Because you don't know brand names other than Samsung and Mean Well, it means anything else is lower quality? Maybe it means you don't know what you're talking about!