Cheap LED Grow Light Reccomendations

With over 100 days last summer over 100 degrees I need to cut as much heat as I can inside the house. Hard enough to keep it a/c as is. Middle of winter and I'm keeping my windows open to keep cool and still run 70-80. Thinking I definitely could use led as I can't vent to the outside stealth like right now
Yeah then led would be perfect for your situation bro. Go for it. Everyone's situation is different I understand that but clearly as you can see I'm not saying go get a hps and this and that I'm just saying what I would do. No disrespect to those who use LEDs.
 
not to this thread or forum
Dude seriously play nice or don't play simple.. I don't know what your problem is. We are in the indoor growing section. I'm just stating my exp indoors with hps lights. You seriously do not have to post if you feel it's irrelevant. There are plenty of led threads out.
 

Voidling

Well-Known Member
I just bought a digital dimmable 400w hps. Want to dim it down and supplement with led. In future hope to run hps in winter and led in summer.

Cab is 18"x36" and 30" tall or so.
 
I just bought a digital dimmable 400w hps. Want to dim it down and supplement with led. In future hope to run hps in winter and led in summer.

Cab is 18"x36" and 30" tall or so.
Nice choice there.. I've seen people do alot in small spaces.. I look forward to seeing your grow.
 

clobbersaurus

Well-Known Member
I'm thinking of pricing out a veg light with
635nm, 660nm, 6500k white, 450nm at 1:1:1:1 or 10:4:4:6

The first is what SupraSPL ran with. The second is close to what knna told me about a year ago.

Then flower try something like based around knna's work
25:7:7:4
Thanks again, bruv. I will see what I can find about knna on these intrawebs.
 

Voidling

Well-Known Member
Knna has great info on leds but along the lines of diy which is the only way to get high efficiency but it's costly.
 
For LED grow lights, the size, light beam angle, and lumens are not very important. The most important thing to consider is the wavelength of the lights. For growing plants you want to use a combination of red and blue lights. Red lights should have a frequency of around 625 nanometers and blue should be around 465nm. It also depends on the type of plants you want to grow. There are some best and reliable online stores offers good quality led grow lights at cheap prices, I would suggest you to go with them.
 

Spuzzum

Well-Known Member
For LED grow lights, the size, light beam angle, and lumens are not very important. The most important thing to consider is the wavelength of the lights. For growing plants you want to use a combination of red and blue lights. Red lights should have a frequency of around 625 nanometers and blue should be around 465nm. It also depends on the type of plants you want to grow. There are some best and reliable online stores offers good quality led grow lights at cheap prices, I would suggest you to go with them.
For starters.. beam angle.. a 90° diode doesn't mix as easily as a 120° or 140°, especially if working with 5 or more wavelengths. It just creates colour spotbeams.

And as for lumens.. if one 630nm red has 30lm more than another 630nm red.. which do you think is stronger and more efficient? My guess would be the diode with 30lm more of that 630nm red wavelength. It's a monochromatic light source.. it's not like a HID where it's a combined lumen amount from "all" wavelengths within the HID's spectrum. And getting back to viewing angles.. "if" you planned on lenses or reflectors, starting with a 140° or 120° angle will be much more concentrated than a 90° stock angle diode, thus outputting more lumens of that 630nm red.
 
I have owned a few led systems over the years and I find that you get what you pay for. The lower wattage systems made my plants stretch like a mofo. The higher the individual LED wattage, the better the penetration. After a ton of research and comparisons I purchased the 'Top Shelf Series 600mx' which I highly recommend. Its the cheapest for its power-class but may be more than necessary for some @ $950 a pop. http://secondsunlab.com/products
 

LEDmania

Active Member
I have owned a few led systems over the years and I find that you get what you pay for. The lower wattage systems made my plants stretch like a mofo. The higher the individual LED wattage, the better the penetration. After a ton of research and comparisons I purchased the 'Top Shelf Series 600mx' which I highly recommend. Its the cheapest for its power-class but may be more than necessary for some @ $950 a pop. http://secondsunlab.com/products
VERY good post, for sure.
But what's the difference between the links you recommended and this link at Alibaba.
http://gehlled.en.alibaba.com/productgrouplist-219025598-2/Noah_Series_LED_Grow_Light.html?isGallery=Y
 

hyroot

Well-Known Member
didnt read all the posts.

just bought 2 of these. was very happy with the first 2 older HTG led's i bought over a year ago.
http://htgsupply.com/Product-7-Band-240w-LED-Grow-Light.asp

there are the 135w lights as well, for cheaper, if it better fits your budget/grow style.

pulled on oz off 1 plant with my old 90w HTG LED, so we will see how these perform.

the ones you are using are around 160 watts , 80x3 in theory is 240 watts, but no leds are driven to capacity except apache's. yours are made by cidly. depending on the color diode. they run at 1.6-2.4 watts. so a rough average of 1.8watts x 80 leds .....
 

LedGrowNewer

New Member
I have owned a few led systems over the years and I find that you get what you pay for. The lower wattage systems made my plants stretch like a mofo. The higher the individual LED wattage, the better the penetration. After a ton of research and comparisons I purchased the 'Top Shelf Series 600mx' which I highly recommend. Its the cheapest for its power-class but may be more than necessary for some @ $950 a pop. http://secondsunlab.com/products[/QUOTE

I tried one,seems very nice.let's see
 

biostudent

Well-Known Member
Sorry for reviving an old thread but have some info that might be helpful.

I built my own led panels for cheap. They are just as effective as commercially sold ones, maybe a bit less efficient, but cost 10x less.

Firstly, the internal components of the assembly are dirt cheap. Do some research on how to assemble these cheap components and you will find in the end that you have a system almost as good as a store bought LED panel.

This is how I started off:
54W 6500K LED. $2.90
54W constant current driver. $8
CPU heat sink with fan: $12
Housing built from scrap metal that probably doesn't even cost $2.

That's $25 for a 54W fixture. Commercial sellers have prices ranging from $1-3/Watt; this is 4x less.
All items purchased from alibaba, eBay, Aliexpress.

Next system I'm building now is like this:
500W constant current driver. $110
10x 54W 6500K LED chips. $29
Aluminum panel with 4 CPU heat sinks and 2x fans on each end (1 inflow, 1 outflow). ~$60.
Total cost: $199, for ~500W system. If I wanted, I could've also used blue red combos (these chips cost like $1 more).

You wont find a 500W LED system on the market that costs less than $500. I built mine for less than half that price, tailored to my needs.

My next system that I'm still planning removes the entire conventional cooling system of heat sinks and fans. Instead, cooling is provided by chemical reactions (i.e. sublimation of dry ice). Still working on the idea.
 

Abiqua

Well-Known Member
Sorry for reviving an old thread but have some info that might be helpful.

I built my own led panels for cheap. They are just as effective as commercially sold ones, maybe a bit less efficient, but cost 10x less.

Firstly, the internal components of the assembly are dirt cheap. Do some research on how to assemble these cheap components and you will find in the end that you have a system almost as good as a store bought LED panel.

This is how I started off:
54W 6500K LED. $2.90
54W constant current driver. $8
CPU heat sink with fan: $12
Housing built from scrap metal that probably doesn't even cost $2.

That's $25 for a 54W fixture. Commercial sellers have prices ranging from $1-3/Watt; this is 4x less.
All items purchased from alibaba, eBay, Aliexpress.

Next system I'm building now is like this:
500W constant current driver. $110
10x 54W 6500K LED chips. $29
Aluminum panel with 4 CPU heat sinks and 2x fans on each end (1 inflow, 1 outflow). ~$60.
Total cost: $199, for ~500W system. If I wanted, I could've also used blue red combos (these chips cost like $1 more).

You wont find a 500W LED system on the market that costs less than $500. I built mine for less than half that price, tailored to my needs.

My next system that I'm still planning removes the entire conventional cooling system of heat sinks and fans. Instead, cooling is provided by chemical reactions (i.e. sublimation of dry ice). Still working on the idea.
biostudent

you could delve into top of the line Cree CXA cobs with good quality drivers [Meanwell] and nearly double your quantum efficiency watt for watt @500 watts for about 15-20% more than your original cost.

You could also build yourself a near 400w fixture out of Crees which will still be more efficient than 500w's of your currently mentioned cobs for less than $500.
 

biostudent

Well-Known Member
^^ Cree cobs are more expensive as far as I've seen, much more than 15-20%. If not, can you share some insight anyway?
 

Abiqua

Well-Known Member
@biostudent

https://parts.arrow.com/item/search/#st=cree cxa3070;reMzFE

The bin I prefer AB3500k is $36 and @1.4amps it is producing about 52 watts over 42% efficient. About 130+ lumens/watt.

One module can be built like this:

1x Your Choice of Cree $31-46
1x Arctic 11_ Alpine Cpu Cooler 92mm $10
1x Meanwell LPC 60-1400 $20

Those are the big items for 1 module.
Then you add things like
  • non soldering wiring harness [$2] -
  • Prolimatech [$10] - Wago Connectors [$3-5]
  • Self tap and drill w/6mm screws [$3]
  • 12vDC 2a Fan Power Supply [will power 5 cpu fans or so at once] [$7]
Each module [52 watts] will average $70, depending on how thrifty you are maybe less.....

7 modules added together would be about 365 watts and just a little less than $500, while putting about 50k lumens.

I hate using lumens, but with all the info that Cree puts out the efficiency, output and spectrum are now mysteries. They might put out double to triple the amount of light, then your generic LED's.

Not trying to be down on your shit, but it is no contest, especially if we are considering price first :peace:
 
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