Par rating for my light/LUX and proper height

jtrizzy

jtrizzy

Well-Known Member
So I actually had that lux app already on my phone which I know means nothing but, I tested at 18" and I was only pulling 22k lux. I went down to 15" and it went to 37k lux. Here is the PAR chart for my light at 18" in a 2 x 3, I have a 2 x 2. Just wondering if the light is too low. I am open to all opinions here. Just don't want to burn my girls. Specs on my light:

Max Power: 205 watts

LEDs: (high potency Ultra Violet & Infrared Equipped)

  • 2 x 60-watt CREE CXA 2530 COB LEDs running @ 50-watts continuous.
  • CREE COB LEDs are 3000k Warm White & 5000k Cool White
  • 32 x 5-watt Supplemental LEDs (UV/IR)
    • Red diodes: 5w dual core Epistar
    • Blue and White diodes: USA Made 5w dual core Bridgelux
COBs: USA MadeCREE CXA2530 3000k & 5000k


Recommended hanging height:

  • Flower 18"-24"
  • Veg: 24"-36"
Par Chart at 18" light height 2 x 3 Tent
AveragePPFD: 447


This Video was super interesting par comparison next a ViparSpectra
 
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Moflow

Moflow

Well-Known Member
Not sure What you're asking.
What size, how old are your plants?
18 inches for flowering it sez.
I'd use the Manufacturers recommended hanging heights.

It reminds me of the Amare lights.
 
jtrizzy

jtrizzy

Well-Known Member
Moflow said:
Not sure What you're asking.
What size, how old are your plants?
18 inches for flowering it sez.
I'd use the Manufacturers recommended hanging heights.

It reminds me of the Amare lights.
Click to expand...
I guess what I am asking is the height. I have them back at 18" right now, but I see people putting LED's at 12, 10" etc. I guess no one can really answer this question for me except my plants. my plants are 12-13" in height right now 1 month old autos.

 
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Moflow

Moflow

Well-Known Member
The reason why some run them closer is probably due to fact that they are Not using lens/reflectors.
You can get the cobs much closer to plants run bare, without lenses.
Your plants are looking good.
I've never done Autos before. How many hours a day do you run the lights at?
I believe with Autos you don't need to give them as intense light as regular seeds as light is on for longer period.
 
jtrizzy

jtrizzy

Well-Known Member
Moflow said:
The reason why some run them closer is probably due to fact that they are Not using lens/reflectors.
You can get the cobs much closer to plants run bare, without lenses.
Your plants are looking good.
I've never done Autos before. How many hours a day do you run the lights at?
I believe with Autos you don't need to give them as intense light as regular seeds as light is on for longer period.
Click to expand...
18/6 seems to be the sweet spot for these ladies. Ya didn’t think about the optic reflectors, makes sense.
 
InTheValley

InTheValley

Well-Known Member
id like to see someone use 12/12 with autos. Plants LOVE nighttime. I bet they would grow much bigger with more sleep,

I dont grow autos, so its just wondering,,
 
grilledcheese101

grilledcheese101

Well-Known Member
jtrizzy said:
So I actually had that lux app already on my phone which I know means nothing but, I tested at 18" and I was only pulling 22k lux. I went down to 15" and it went to 37k lux. Here is the PAR chart for my light at 18" in a 2 x 3, I have a 2 x 2. Just wondering if the light is too low. I am open to all opinions here. Just don't want to burn my girls. Specs on my light:

Max Power: 205 watts

LEDs: (high potency Ultra Violet & Infrared Equipped)

  • 2 x 60-watt CREE CXA 2530 COB LEDs running @ 50-watts continuous.
  • CREE COB LEDs are 3000k Warm White & 5000k Cool White
  • 32 x 5-watt Supplemental LEDs (UV/IR)
    • Red diodes: 5w dual core Epistar
    • Blue and White diodes: USA Made 5w dual core Bridgelux
COBs: USA MadeCREE CXA2530 3000k & 5000k


Recommended hanging height:

  • Flower 18"-24"
  • Veg: 24"-36"
Par Chart at 18" light height 2 x 3 Tent
AveragePPFD: 447


This Video was super interesting par comparison next a ViparSpectra
Click to expand...
Lolz i make 30k at my floor @ like 4 feet from my dollarstor lights and a 150 hps
 
grilledcheese101

grilledcheese101

Well-Known Member
My handheld is within 100 lux of my phone dude. Lol. And. You can calculate par using lux and adjusting the factor to suit the lightsource. Its known fact in science and botany
 
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