Are LED's practical for a grow room? (24 ft x 12 ft)

[bicit]

you see how nicer buds are better ???? what do you consider nicer buds ???? LED grown lol CFL grown, T5 grown ??? you want something relevant ok
everyone is talking Cree and then on other hand calling Chinese made led's JUNK haha..
When in fact CREE is made in china , Taiwan, Indonesia people are talking about running there Diy LEd's @ 700 mah when in fact its takes different wattages or MAh to create a specific spectrum of wave length cold this be a double standard ???
i mean really
Your mentioning now for some reason LED produces better buds ??? like saying organics is better then chemical grown ??? again talking real time science and studies done proves that is not the case again double standard

What the hell are you even going on about? Figure out how to structure a sentence and then come back to us.

Would you abide by a claim that a random generic HPS bulb is exactly the same a philips or hortilux bulb? If not, why are you doing the same thing to COB technology?

Sure CREE products may be made in china, but the quality of the materials and the standards of manufacturing are completely different than the low dollar generic cobs available. The technology utilized in cobs is also very different than the 20mm stars or multichip designs that flood the market at the present moment and the SMD LED's that the majority of LED light bulbs.

Also it's important to note that the white cobs don't experience any appreciable spectral shifts during dimming. The CCT will remain relatively constant throughout rated power range of the cob. Quite unlike HID technology.

 

[Darth Vapour]

sorry i blame my fat fingers but the truth LED is perfect for supplemental lighting

“the most efficient HPS and LED fixtures have equal efficiencies, but the initial capital cost per photon delivered from LED fixtures is five to ten times higher than HPS fixtures.” Yes that’s right, they measured light by the photon; pretty intense right?

Another interesting finding in the study is that light quality is much less important than light quantity. While light quality will govern certain aspects of plant metabolism, it has a small effect onphotosynthesis, which is the most important driving factor in plant development. While this goes against what many LED grow light manufacturers have to say about their products and the wavelengths they put out but, the fact remains that HPS lights are still the workhorse of the indoor cannabis industry, and for good reason.

It wasn’t just any kind of HPS light that took the crown in that study: double-ended HPS fixtures were around 60% more efficient than the common mogul-base HPS fixtures.

The study suggests that “just as precision irrigation can improve water efficiency, precision lighting can improve electrical efficiency,” meaning that different arrangements in a grow room or greenhouse would require HPS, LED, or both in tandem. Grow rooms with highly spaced benches will benefit from LED lighting because it provides a more focused beam. On the other hand, grow rooms with more of a “sea of green” would benefit from HPS because less light would be lost to the floor or walls in its wider beam. LED’s have the advantage of being cooler to the touch and they can be used right in between the plants where 100% of light emitted gets captured. The precision delivery of light in LED fixtures also makes them ideal for supplemental greenhouse lighting.

The moral of the story is small-scale growers should stick to HPS lighting if they want to save money, with double ended bulbs being the best option for higher wattage fixtures, say 1000 W. For larger scale operations, a careful layout of the garden and its lighting is essential and can save a grower thousands in electric bills.

 

[bicit]

The moral of the story is small-scale growers should stick to HPS lighting if they want to save money, with double ended bulbs being the best option for higher wattage fixtures, say 1000 W. For larger scale operations, a careful layout of the garden and its lighting is essential and can save a grower thousands in electric bills.

No the moral of the story is that a grower of any size should get the light that suits their space, operating conditions, and budget. All plants care about is photons. It really makes no difference where those photons come from.

 

[SPLFreak808]

Wow 100$ for a replacement bulb is just retarded. 600 watts at that. I get my super hps 1kw hortilux for 65$ shipped. And they take 2-3 untill the meter can even read the output degrading.

 

[Yodaweed]

Wow 100$ for a replacement bulb is just retarded. 600 watts at that. I get my super hps 1kw hortilux for 65$ shipped. And they take 2-3 untill the meter can even read the output degrading.

Yeah for some reason the 600watt bulbs are MUCH more expensive than 1000watters... no idea why...

 

[SPLFreak808]

Wow 100$ for a replacement bulb is just retarded. 600 watts at that. I get my super hps 1kw hortilux for 65$ shipped. And they take 2-3 untill the meter can even read the output degrading.

Mybad, never owned a 600 yet. Man them bulbs are retarded. Must be the extra 10 lumens per watt vs the 1k lol.

 

[Darth Vapour]

Mybad, never owned a 600 yet. Man them bulbs are retarded. Must be the extra 10 lumens per watt vs the 1k lol.

Yet the 1 k will just destroy a 600

 

[KarmaPaymentPlan]

Yet the 1 k will just destroy a 600

yet 3 600w would smash 2 1000w

 

[SPLFreak808]

Yet the 1 k will just destroy a 600

Well of course it would. 40% more power outweighs the extra 6% efficiency.

Two current limited 600's at 1k would smash a 1k alone, not counting the added efficiency by using another ballast.

 

[Rahz]

There's a lot of talk about efficiency and nobody is convincing anyone of anything for the most part. After all, it's just words and numbers. There are two ways to reasonably compare two lights, DE and LED in this case. First is a controlled grow. Probably not going to happen as a result of this thread. A couple weeks back there was a similar thread. The bulb fan offered to buy an LED unit that would beat his HPS on the grounds that he get his money back if it didn't. I offered to sell him 2 300w lamps at 20% over costs. He took me up on the offer then retracted in a PM. So much for that.

Second is a cumulative average of light measurement. Probably not going to get a PAR meter donated, but for a simple side by side comparison a LUX meter would do the trick. To deal with calibration issues the same meter could be used under both lamps. One person takes readings and ships the meter to the other person. I would be up for that. I've been meaning to get a LUX meter anyway for relative comparisons between the lamps I've built.

The weak link in my DIY chain at the moment is the sheet metal fabricator. The first guy I went with gave me a really nice prototype. I asked him to give me a quote in aluminum. Two weeks later I have to call him, "Oh yea, $65 a piece". Ok, I want 4 then. 2 more weeks later and I still haven't heard from him. Monday I went to another fabricator, they're going to make me 4 as well. Between the two of them I should have some enclosures to work with in the next week. I have all the other parts laying around waiting. So in about 2 weeks I should have 2 300w units made for a 4x4 to play around with. I can't do a controlled side by side because I don't have the space for even 1 4x4 (which is why I got into LED in the first place), but I would love to take some measurements and compare them to a 600w DE.

 

[Rahz]

Also, true story I want to point out. I don't have any experience with DE but I have a friend that's been growing with HPS and MH for years. He's got a 3x3 veg box and had been using a 150w MH in there. The bulb was about 2 years old and he decided he wanted to upgrade. I said ok, here's a 200w LED. He put it in there at the same height as his MH and called me a couple days later freaking out. I go over there and his plants were getting simmered. I told him to raise the light 2 more feet til the plants adjusted but they were already withered and a couple days later after no improvement he went and bought a 600w bulb and ballast and is running the ballast at 50%. I don't know how linear the dimmer on the ballast is, but assuming it's at 300 watts, it's super weak in comparison to my 200 watt LED. I'm talking half as bright. In fact, my 200w LED looks about as bright as his 600w flowering bulbs, though to be fair it's probably about time for him to change those too.

 

[Darth Vapour]

yet 3 600w would smash 2 1000w

Some people think that but i beg to differ,, Again have been around the block for some time and consulted with many 600 grows or helped friends out but Anyways just by looking around grow journals etc 2 - 3 600's and then 1 - 2 1000's there is a significant difference in yield i see normally through friends grows 4 - 5 600's pulling 4 - 6 pounds max dry weight
1000's mean business i will fire up and make sure to invite you to journal with 32 site under under current 50 pound harvest tree grow .... ( Fall Green house grow ) 20,000 watts just waiting on 20 modules and some components 2000 liter res or 528 gallons ,, 408 active circulating ..
In the mean time working on my outdoor 6 plant 36 - 45 pound harvest should work out well have green house going and harvesting out door .. at the end of the day its all about this

 

[REALSTYLES]

Some people think that but i beg to differ,, Again have been around the block for some time and consulted with many 600 grows or helped friends out but Anyways just by looking around grow journals etc 2 - 3 600's and then 1 - 2 1000's there is a significant difference in yield i see normally through friends grows 4 - 5 600's pulling 4 - 6 pounds max dry weight
1000's mean business i will fire up and make sure to invite you to journal with 32 site under under current 50 pound harvest tree grow .... ( Fall Green house grow ) 20,000 watts just waiting on 20 modules and some components 2000 liter res or 528 gallons ,, 408 active circulating ..
In the mean time working on my outdoor 6 plant 36 - 45 pound harvest should work out well have green house going and harvesting out door .. at the end of the day its all about this

What strains of those )?I bet you if I use those same strains with less wattage same result so what are you trying to prove?

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[churchhaze]

What strains of those )?I bet you if I use those same strains with less wattage same result so what are you trying to prove?

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Did one of them post pictures out of context again? You should show them what 744W of gavita killers can do in a 4'x8' again.

 

[REALSTYLES]

Some people think that but i beg to differ,, Again have been around the block for some time and consulted with many 600 grows or helped friends out but Anyways just by looking around grow journals etc 2 - 3 600's and then 1 - 2 1000's there is a significant difference in yield i see normally through friends grows 4 - 5 600's pulling 4 - 6 pounds max dry weight
1000's mean business i will fire up and make sure to invite you to journal with 32 site under under current 50 pound harvest tree grow .... ( Fall Green house grow ) 20,000 watts just waiting on 20 modules and some components 2000 liter res or 528 gallons ,, 408 active circulating ..
In the mean time working on my outdoor 6 plant 36 - 45 pound harvest should work out well have green house going and harvesting out door .. at the end of the day its all about this

My buds look like picture four and I'm using leds at less power same results go figure

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[Darth Vapour]

And how do i know 2- or 3 - 600 vs 2000 will not beat a 1000 is again from growing same strains buddies 600's yielded 36 plants 3 600's yielded him under 4 pounds dry where i did with 2k 4.75 pounds and that was with 5 plants my clones only difference i can see is he used GH and i used another brand and during there grows they were calling me to borrow 1k's cause when they seen what mine looked like vs there same time frame they were like WTF

PS and the 600's produced a shit load of B grade buds fluffy lower and also allot more shake here some 1k lower buds

 

[REALSTYLES]

And how do i know 2- or 3 - 600 vs 2000 will not beat a 1000 is again from growing same strains buddies 600's yielded 36 plants 3 600's yielded him under 4 pounds dry where i did with 2k 4.75 pounds my clones only difference i can see is he used GH and i used another brand

Would you shown me that pathetic and I'm a HPS grower well I used to be an HPS grower

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[Darth Vapour]

Yo RS were still waiting for you to post couple pics of plants separated,, Lets see how strethed they are and most importantly lets see the size of stalk ,, ???
If you say it can hold buds that size Good luck
grab a couple of your best plants pull them out show us how they look all alone ,, hahaha show us how they could possibly with the size of main stem hold a big bud comparable to 1k dummy
dude that bud is on a 5 gallon pail

 

[SPLFreak808]

The problem with 600's is the footprint. People run them as high as the 1kw, yet reducing yield once again. There is absolutely no difference except the wattage/efficiency and quality of the bulb asuming one knows what they are doing.

 

[a mongo frog]

The problem with 600's is the footprint. People run them as high as the 1kw, yet reducing yield once again. There is absolutely no difference except the wattage and quality of the bulb asuming one knows what they are doing.

Who's running them as high as 1 k?