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Old 01-21-2015, 08:22 AM   #1 (permalink)
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LEDS

Hi,

It,s been a long time

I would like to grow again, have a 3x3 ft tent and a 400 HPS for flowering, however, the light plus the air conditioning I need for the room (I live in a Caribbean island, it can get HOT) are pushing my electric bill to the point that I stopped growing and buying excellent quality bud from a friend.

He invited me to take a look at his grow room, I was taken aback when I saw he was flowering beautiful, compact (not cotton ball) buds with LEDS !

If it works for him, it will work for me. But have a couple of questions (my friend doesn,t know I grow and I won,t tell him, or even hint him, and seems reluctant to talk, he was pretty drunk when he showed me his grow)

I care more about quality than quantity since I grow for personal use and I,m not in the business.

- What are the advatages/disadvantages of LEDS VS HPS?
- Will I save in my power bill?
Anybody here growing with LEDS? Any quality brands?

Your input is highly apreciated as I,m in Europe and just bought some top notch seeds. Also, I,ll have ACL surgery soon and a garden will keep me bussy in the months of rehab I,m facing.



Peace, Wirikuta
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Old 01-21-2015, 09:53 AM   #2 (permalink)
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I don't know anything about LEDs for growing but i replaced 1200W of (most halogen) lights in my apartment with 75W of LEDs and the reduction in electricity use is about 90% and the reduction in heat generated is almost 100%. Some of the more powerful bulbs I use do get warm to the touch, but the halogen it replaced can give you second degree burns when its on.

The initial investment pays off according to this calculator:
LED Bulb Savings Calculator

edit: for brands it depends what you are buying. almost all bulbs are made in china (be careful of extremely low priced fakes if using mains electricity) and the panels I have were made by samsung, but assembled by a chinese company vtac
http://v-tac.eu/index.php/products.html
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Old 01-21-2015, 02:13 PM   #3 (permalink)
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I've been using HPS for 10 years now and I'd love to switch to LEDs but I've never seen any grows from start to finish using them. If you do get a grow going please keep us updated.
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Old 01-22-2015, 01:49 AM   #4 (permalink)
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Stoneric,

I saw the guy's mother, veg chamber and bloom tent. Everything was up there with the best I've seen, nice compact buds, no ballasts and much less power consumption, and heat, you may want to check this out:

Best LED Grow Lights Reviews Guide For 2014

Made a lot of research yesterday, since I'm getting some killer seeds, I'm getting this:

XTE Series LED Grow Light - USA Made 5w LEDs - Advanced LED Grow Lights

Peace, Wirikuta
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Old 01-22-2015, 10:11 AM   #5 (permalink)
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The LED technology has advanced in leaps and bounds.
The Cree LED bulbs put out an intense amount of lights where supposedly a 10w bulb is equal to a 400w HPS. I have not seen a Lumens amount listed to verify that statement but I have seen Cree bulb mini flashlights with a light bright as a train coming out of the tunnel.
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Old 01-22-2015, 04:02 PM   #6 (permalink)
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Looking at those LEDs in the links provided it would seem the electrical savings aren't as much as I thought they might be. Around 20% if I was understanding it correctly.
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Old 01-22-2015, 05:19 PM   #7 (permalink)
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Quote:
Originally Posted by stoneric View Post
Looking at those LEDs in the links provided it would seem the electrical savings aren't as much as I thought they might be. Around 20% if I was understanding it correctly.
It may be, but 20% is something, what I noticed in my friend's grow is the less heat, and very little noise, and you just plug it to a timer, no ballast needed.

Also, the same LED can be used for both veging and blooming.

My friend's grow runs quietly, he has it in his bedroom!

I'll give it a try, it will keep me busy while I recover from arthroscopic surgery to my knee
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Old 01-22-2015, 05:42 PM   #8 (permalink)
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I'm definitely intrigued. The good ones are expensive but they'd pay for themselves. And they would indeed save a shitload of electricity since you wouldn't need near the wattage. They had one using 165 watts being superior to a 600 watt HPS. My growrooms are in a walk-in closet in my bedroom and have been for 10 years. I don't know if I'll be able to sleep at nite with no fan noise.
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Old 01-22-2015, 07:58 PM   #9 (permalink)
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Quote:
Originally Posted by Wirikuta View Post
Also, the same LED can be used for both veging and blooming.
How is this?

Does it give off a broad enough spectrum to cover both?

If so, is that ideal?
Isn't the more natural shift in light spectrum suited better for the plant's different stages in growth?


Or can you shift the spectrum on command with the one led setup? something like that?
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Old 01-23-2015, 03:53 AM   #10 (permalink)
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run red and blue spectrum mixed leds,(cool purple grow glow) not too close or you'll bleach the tops.....
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Old 01-23-2015, 01:59 PM   #11 (permalink)
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How is this?

Does it give off a broad enough spectrum to cover both?

If so, is that ideal?
Isn't the more natural shift in light spectrum suited better for the plant's different stages in growth?


Or can you shift the spectrum on command with the one led setup? something like that?
You can grow with just one HID light also. I use high pressure sodium throughout although ideally metal halide would be better for vegging. Not that this applies to the LEDs. I looked at those links Wirikuta provided and I believe there is a switch that changes spectrums for LEDs but I'm not sure.
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Old 01-23-2015, 02:20 PM   #12 (permalink)
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eric, you should try a mh lamp for your veg and switch when flowering back to the hps, using the hps ballast for both. It would make a neat experiment to compare previous crops to... Although you control your flowering, your veg time with the mh may be shorter than with the hps due to more vigorous growth, making quicker harvests.... Just a friendly thought, from one older grower to another.

Sorry I went off topic...
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Old 01-23-2015, 02:34 PM   #13 (permalink)
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Quote:
Originally Posted by moketweed View Post
eric, you should try a mh lamp for your veg and switch when flowering back to the hps, using the hps ballast for both. It would make a neat experiment to compare previous crops to... Although you control your flowering, your veg time with the mh may be shorter than with the hps due to more vigorous growth, making quicker harvests.... Just a friendly thought, from one older grower to another.

Sorry I went off topic...
I've used MH during veg and didn't see much of a difference. I have a continuous grow and the veg time stays the same and right now I have a hard time keeping it small enough so it doesn't outgrow the flower room. So shortening veg time isn't something I need to do because it has no place to go until the flower room has an opening. But thanks for the advice my friend.
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Old 01-24-2015, 03:31 AM   #14 (permalink)
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what if you used a couple cfl uv bulbs to supplement LEDs? they can fit into regular lamps and produce good light spectrum.

the main drawback is cost per bulb
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Old 01-24-2015, 06:50 AM   #15 (permalink)
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Why would you need them? Sounds like LEDs have surpassed HIDs and there is no need for supplemental lighting with them.
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Old 01-24-2015, 07:56 AM   #16 (permalink)
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My concern is how far do they push useful light Lumens?
A small bulb may be very bright but if the energy outputted fades quickly as distance increases , then it's no better than using 1000 candles for your grow room.
I want to know what it's energy output to the plant is at say 3-4 feet away. It may cover 20 sq.ft. but if it's to a depth of 12 inches...who cares!
As far as I've ever known, motors and lights are the same.
"There is no replacement for displacement!"


If they do everything a 1000w HPS does, plus more, they are definitely worth considering if you have the cash to convert.
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Old 01-24-2015, 10:47 AM   #17 (permalink)
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Quote:
Originally Posted by slunt View Post
My concern is how far do they push useful light Lumens?
A small bulb may be very bright but if the energy outputted fades quickly as distance increases , then it's no better than using 1000 candles for your grow room.
I want to know what it's energy output to the plant is at say 3-4 feet away. It may cover 20 sq.ft. but if it's to a depth of 12 inches...who cares!
As far as I've ever known, motors and lights are the same.
"There is no replacement for displacement!"


If they do everything a 1000w HPS does, plus more, they are definitely worth considering if you have the cash to convert.
According to the proponents, lumens are irrelevant.

I saw side by side comparisons of a LED using 330 watts kicking ass on a 600 watt HPS. Of course it was from a LED website and the plants weren't MJ.
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Old 01-25-2015, 08:34 AM   #18 (permalink)
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wide spectrum LEDs similar to wide spectrum fluorescent should work fine for any Gro because one does not require as much distance from your plants.
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Old 01-25-2015, 08:41 AM   #19 (permalink)
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in converting carnival lighting from incandescent and quartz lighting the power reductionthe power reduction required to the light the show has been greater than 85%. since most shows on the road generate their own power this conversion to LEDs has been adopted by most traveling carnivals.
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Old 01-25-2015, 10:10 AM   #20 (permalink)
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Just pulled the trigger. Ordered $982.00 worth of LEDs. 1 for veg and 2 for flower. A Mars2 700w(2) and a Mars2 400w. Much cheaper then bigger names but I read good things from growers that use them.
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