Is 120 watt of whire and blue ok?

Smokinr33

Well-Known Member
As title states is 120watts of blue and white led light ok for 2 plabts from veg to flower

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puffenuff

Well-Known Member
Do you know what the color temp of the whites are? What is the ratio of white to blue?

It should veg ok but depending on the answers to the questions above, flowering results will vary.

If you have a link to the light, that would help us interpret its merit.
 

Smokinr33

Well-Known Member
I will find it online when i get home but im pritty sure its from 6000k to 14000k

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vostok

Well-Known Member
Is 120 watt of whire and blue ok? ...NO not unless you want Sqat plants, always best to include some rd lit, bust 4u 2google kelwin
 

Smokinr33

Well-Known Member
Aquarium Coral Reef Tank White Blue LED Grow Light 120W
Total Led : 55 ( 3W/Led )
Total Wattage : 120W (55 *3W )
Blue : 30*3W LED , White : 25*3W
LED
Power Consumption :
63W ( Blue on, white off )
66W ( White on, blue off )
131W (Both on )
Universal Voltage : 85V-265V
Working Current : 630mA
Working Frequancy : 50/60 Hz
Cooling : Build-in 3pc fans for cooling
Color : Blue & White
Blue : 460-470nm
White : 20000k
Lifespan : 50,000+ hours
Wide beam angle :120 degree
Max Lux : 2200 lux
Size : 400mm*212mm*60mm
Shipping Weight : 4.0kg
Working environment -20~40°C
Power :120W (55x3W
Lumens =5500LM(all)
Blue : 25*3W LED
White : 30*3W LED
Color Blue & White
LED Wavelength d(nm)Or Tc(k): blue: 460nm, white:20000k
LED Color : white and Blue (1:1)
LED Configuration : 55X3W (30Blue and 25White)
Lux(centre ):330/2m,245/2.5m,150/3m
Height above the Plant : 2m,2.5m, 3m,
Lighting time : 10 -16 Hour
Specification :
1) Use high efficient 3w LED as the light source, Based on 55x 3W high power LEDs.
2) Wide beam angle: 120 degree
3) Unique heat dissipation device: thermostatically controlled fans to keep LED light cool.
4) Built-in CE approval Power supply, plug and play
5) Environment-friendly: no mercury and other harmful heavy metal
6) Blue & White alternative,(Blue, white, blue, white..)
3 modes optional:
A. Blue on, White off;
B. Blue off, White on;
C. Blue on, White on
7) CE & ROHS APPROVEDPackage includes:
1x Aquarium Coral Reef Tank White Blue LED Grow Light 120W
Description:
Aquarium light (also known as LED aquarium light) is a special lamp, which is currently made of LEDs. Based on the fact that plant growth requires sunlight, this aquarium lamb provides light that have the same effect as natural sunlight and hence offers a very good growing habitat for seaweeds, corals, fish, etc.
Note: The rated power of our chip is 3W, but actual using power is 2W

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Smokinr33

Well-Known Member
That was a copy and pasre from the site it was bought from. Hpe it helps give you more figures to helpe find out if i can use it

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canadian1969

Well-Known Member
That's for growing Coral, in an aquarium. The actual wattage (nominal input 120 watts ) is about right, so if you are planning on a Coral reef grow, yep, this light will do it. It would be a regular sized tank for a light that size.
 

Smokinr33

Well-Known Member
Yeah i did know that since it came off a mates tank which he used on fresh water planted tank and a marine tank and i figured since it worked on the fresh water tank it should work on an out of water plant too since its designed to put out the kind of light needed for plants to grow. Not sure if your just letting me know its for marine tanks or if you think im being stupid uing it for weed but i just wanted to know if any of the pro led growers would think i could grow with it and if so would i possibly get more than 5 grams off of the 2 plants each

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FranJan

Well-Known Member
Hey Smokinr33, IMHO, without some 630/660nm to counter balance all that blue, your yield could be anywhere from what you said to disastrous. I would think you'd need quite a few warm whites, LEDs and/or CFLs, to accomplish that. Maybe an array of WW COBs could do it, but that combo of 20,000K + 460nm has a shitload of blue to go on top of a shitload of blue and that means a load of COBs + drivers, which is $$$. It's got toooooo many 20,000Ks to be used for vegging. You'll kill most seedlings I bet and have to keep it far from the plants too and they will still grow very slowly. Beautifully, but slowly. It would probably work for keeping moms, which I've done with 12,000K LEDs but ended up getting some 630nm for better plant health and root growth..

Sell it or turn it into a grow light with a proper spectrum. That's my .02 :)
 

Smokinr33

Well-Known Member
What is nm by the way and thanx for that i fo i never thought it would kill the plants. What if i turned the blue led's off completely. It has a seperate power source for each color and an adjuster nob for each color so i cn control the brightness from nothing to full brightness. Id sell it and buy one of those pink led ufo things but cant find any in my area


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Mohican

Well-Known Member
nm = nano-meter it is used to measure light frequency (color). Like micron (u) is used to measure bubble bag mesh size.

Here is a standard spectrum chart in nanometers:




Cheers,
Mo
 

Smokinr33

Well-Known Member
I was under the impresion that weed needs blue light to grow well. Could i get away with using the white only

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Mohican

Well-Known Member
White contains all of the colors of the spectrum.

2700K (Kelvin) soft white bulbs are more red and 6500K daylight bulbs are more blue.
 

canadian1969

Well-Known Member
No no, not stupid, just the wrong application. The reason it has primarily blue is that blue light is a higher energy wavelength, which is required to transmit through a medium like water. Obviously it is still relevant to photosynthesis, but if I had to make a comparison it would be to a Metal Halide, in terms of spectrum at least. Good for veg probably, not likely to flower all the great, but no way to tell unless you try I suppose.
 

Smokinr33

Well-Known Member
Yeah im thinking of making a veg and a flower bock. If i use the led unit on half strength 60 watts for veg can i then use my 72 watt cfl grow box to flower or will it need to be way highee wattade to compensate for the high output of the led unit? I wish i could find those huge cfl bulbs i see on this site. The only one i can find are proper grow cfl's but they are 150 bux for one

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canadian1969

Well-Known Member
there are charts floating around with recommended wattage for various light types, by surface area and per plant. useful as a guide, but nothing is etched in stoned...lol

LED is the most efficient use of light energy, period. also the most expensive. I found the difference between T5HO FLORO and LED to be so drastic as to make me entirely dismiss floros altogether. If you have a mix of T5, cfl, t8 etc, you will be looking at tripling the wattage to get same results as LED. Floros are okay for veg IMHO. LED or HPS for flower. Again these are just my findings.

my budz and I now use a basic formula for LED equivs. 60% of your HPS wattage, so if you were using a 400 watt HPS, Go with 240 "actual" watts of spectrum tailored LED. Your choice of spectrum will define the application, but normally we are talking 6:1 ratio of red:blue for flower. This has resulted in as close to a side by side comparison as I can get. Don't believe the "cant grow with led" crew, total bs. Last batch of purps, colas like donkey dicks. Cannabis is easy to grow, its a weed and will grow under just about any light, its the finished result however that is the main focus.

Where LED doesn't shine is in vegging. Clones will veg no problem under floro and while not as efficient, the price difference is major. Spending a pile of cash on LED for veg/cloning doesn't make sense really. I suppose that an LED rail with a few blues and the occasional white would do the job, but it really boils down to cost. Yes LED will always be more efficient in terms of its energy use, but vegging doesn't require the intensity that flowering does. If the aquarium LED didnt cost you anything then go for veg, alternatively veg under cfl or t5 and flower with the LED, but you may need to supplement with an additional red light source during flower to give the spectrum more relevancy. hope that made sense, sorta tuned up atm lol.
 

canadian1969

Well-Known Member
I should also note, the addition of white diodes is to build out the spectrum in the 500-600nm range (green-yellow), the plant does use these wavelengths, but to a much lesser degree so you normally find a few thrown in with most LED models now, but the blue and red are the meat and potatoes of photosynthesis.
 

Smokinr33

Well-Known Member
Ok i see. At the moment i have 2 plants under 72 watts of cfl light, 2 warm white and 1 cool blue and i plan on seeing this first grow through with this setup and depending on results if i deside i want more yield then i will re make my box setup and add the led unit in a way that allows me to keep atleast 2 warm white cfl's, how does that sound

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