Best Led For 4X7 Space

Mars 2 1200.... Good light.. Look at top led thread in this forum. Lots of people use them. I have the 1200, and it grows just as good if not better than my old 1000 watt hps setup.

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LED is not known to grow big flowers.
 
Use the LED to veg HPS to flower.

 

LED can grow big flowers...the problem that most people run into is they think using a 200w LED is going to rival a 600w LED...it wont...
 
But you put LED watts = HID watts, the LED will definitley outgrow a HID anyday watt for watt.
 
Generally the reason most people get low yields with LED is because the way that LED companies lable their products, saying a 200w light is equal to a 600w light... so people believe this and when it doesnt grow as much...then they think its the lights fault..
 
Any light when given the correct PPFD of 500Umol/m2/s1 or higher can properly flower cannabis. Its all about if the plant is recieving the right  Daily Light Integral or not....
 
Generally, from what I have seen so far with my experience, if you use  at least 60% or more LED watts vs HID watts, they should yield about equally...
 
LED are more efficient and time and time again you will get a higher gram/watt with LED over HID...

 

 
 
LED and the makers of compact florescent lighting need to post honest numbers.
 
I want an LED that will draw 1,000 watts, a super kick ass light. Shoot for 3-4 pounds a light.

 

I 420% agree !

 

Well its hard to say since I don't have a 1200 Mars II, but based on my grows and my experience with the smaller LED's... It seems that you need at least 60% LED wattage of the HID you are replacing...
 
-For instance... I used 3x Mars II in my V-Scrog setup and yielded about 11oz using 540W approx..   .57 gram/w
-In the same tent using the same V-Scrog setup I yielded around 19.5oz using 1040w HID approx... about .  .52 Grams/w
-The grow I just finished testing the Intelligent Gro LED's gave me my best gram/watt to date at .63grams/w (using about 300w) but only yielded around 6.8 oz (not scrogged but in same tent and same soil recipie and feedings)
 
So the LED grew more efficiently, but yielded less than my 1000w HID setup did...(now I was using only 500w and 300w compared to 1000w HID)
 
But watt for watt...if I used 1000w of LED... I actually would have yielded larger than the 1000w of HID based on the higher Gram/w.
 
(Estimated by Gram/w at 1000w)
620g Intelligent Gro LED
570g Top LED
520g HID (MH and HPS combo 400+600w)
 
I guess this is the best I can explain my reasoning and experience. Therefore I say about 60-80% LED watts: HID watts (probably closer to the 80%) should give a fairly equal yield depending on the LED... some chips run much more effieciently than others at the same wattage...so depending on the LED the results may vary...

 

I would trust what icemud says. Dude seems right on with his advice.
Comparison wise, since I am using a 1200 mars 2, and having almost 20 yrs experience with hps of every wattage, that the 1200 is doing everything my 1000 watt setups have done in the past. But would have to say temps are easier to control, less energy consumed, NO MORE PORTABLE AC TO CONTROL HEAT, and led grows tighter more compact plants.

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Thanks Nuker... I try to always have the right answer and if not usually if I have the time I will research it. Especially with lighting, there are so many half truths, misleading advertisments and false claims that I always try to learn what I can and put the info out there appreciate the compliment, and genenerally the answers I give have been researched, but I do also make mistakes sometimes so I would still encourage everyone to do their own research and fact checking I do try my best
 
With LED what I noticed the biggest difference was more tricomes, and better flavor buds...
 
For me, my heat actually increased with LED but I believe  it may have to do with my smaller grow area as most larger tent growers experience what you did, as a reduction of heat...
 
My biggest perk for LED is the energy savings... I was running 2 tents before of HID, now I have 3 tents going with only LED so I added an extra grow area, and my bill is still lower especially in California where we pay close to the highest for electricity. (.34$ per KWH)! yyikes! (well I am on tier 4 and 5)...It starts at I think $.14 per KWH..

 

I honestly would recommend the Intelligent Gro's over the  Mars II...they produced better results for me and have more spectrum bands, a custom controller, secondary lenses and American warranty.
 
For your space I would suggest probably 2 of the 810w panels

 

The footprint of the Mars II isn't that great, I have the 700w. It's probably better for you to get two lights and space them apart.
 
 

I see you post in a lot of lighting threads. I have come to the conclusion that you are obsessed with HPS lighting and it actually bothers you that other people use LED and CFL lighting and get good results. It is possible to grow big flowers with LED lighting. HPS is not the end all be all of growing.
 
You also complain about the numbers posted by companies but really you're just lazy or stupid or, most likely, a combination of the two traits. It's not like it is a big secret that the draw of an LED light is different than the sum of the watts of each bulb, they're designed this way to improve the life of the light. It's also not a secret that a lot of CFLs are listed with their incandescent equivalent wattage instead of their draw. This doesn't fucking matter, compare the lights using the proper wattage and you will see that they are not any less effective than HPS. You might as well get mad at milk companies for not selling 3.785liters of milk instead of 1gal, it's just a matter of conversion which is trivial given that every person posting or reading this thread has access to a calculator.

 

 
 
Hey dummy you are not going to grow big fat plants with LED. They are for the super rich or the closet grower.
 
Where are you great fucking buds under LED?
 
Put up or shut up punk!  You can kiss my ass little boy.

 

Not only can LED's grow just as good with less wattage, but they grow better buds... with higher THC and cannabinoid content! Fact! But also better terpene profiles..FACT
 
http://youtu.be/YrUDJA00soI

 

 
OK did you see what that light is?
 
A HPS 1,000 watt light cost $250 for a nice one.
 
The AT600<span> cost $2,399.99</span>
 
I sure an fuck hope a $2,400 light will beat a $200 light. It barely does it.
 
That's where the comparison is ridiculous.
 
Yea your Ferrari will outrun my GMC pick up.
 
Dont read me wrong I would love to own 8 of those expensive fuckers.
 
http://www.apachetechinc.com/white-red/25-at600.html

 

 
HPS you should replace bulbs yearly...lets say 100$ a bulb..
 
In the example above with the 600w LED vs 1000W HPS... each month you are saving 400w roughly,  at my rate of electricty (32cents/KWH) here in socal roughly $50/month..
 
HPS you are buying bulbs every year...100$ plus using an extra $600 in electricty per year with HPS...
 
In 4 years, using LED you save 2,800$ which pays off the light and you already are seeing a positive ROI.
 
So in under 4 years, the LED pays itself off and then you  are saving, while HPS keeps on sucking money out of your wallet..
 
Also...a 3% higher THC content is going to fetch a better price at dispensaries, thefore your product will be more valuable to them, which typically increases the sales price. (if your vending)

 

 
You pay over 3 times my power rate.
 
I would love to have that exact light 8 of them, its got more balls than most LED's if read or seen videos of.
 
Right now I want a glass blowing torch ,some gas bottles and a kiln.
 
Once I have money to invest in the LED lights, you bet I will.
 
When I started growing indoors again a friend found out he had liver cancer and have several people I grow for now. I needed horsepower and needed it fast. No money at the time, The first 1,000w MH I got was borrowed from a friend.
 
We would not be growing medicine if we had to pay a lot for a light system. If anyone has cancer and may not see Christmas I hope they get a big light and grow the pound of herb they need.

 

blah blah blah the bottom line is you claim that LEDs can't grow and that they're toy lights and now that you've been shown to be wrong you sing a different song about wanting to buy LEDs and use them instead of your HIID setup. You ought to stop shit talking LEDs in every lighting thread. There is an initial investment but that doesn't make them less worthwhile than HPS/MH setup it just makes them a longer term investment that will end up being more profitable.