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Need help with dialing LED lighting

  • Thread starter Thread starter Saul_Goodman7
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Need help with dialing LED lighting

Saul_Goodman7 6 Replies 1,238 Views
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Saul_Goodman7

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#1
Hello everyone, as the title says I need some help with LEDs. I posted a while back about magnesium deficiency and purple stems, found out my lights were way too intense. I turned them down and my plants turned green and starting growing immaculately.

Having said that, I struggle to find correct lighting heights and intensity. Right now I have a 450w led in my 4x4 veg tent that is only set to 10% at around 20 inches from the canopy. If I go any higher than that my plants start to show the exact same symptoms as before.

I know vegging plants don’t need a ton of light, but only 10%?? Doesn’t add up based off my prior experience. Lastly, my plants always grow a little tall and lanky instead of bushy. No matter what strain. They all grow similar and I am trying to get to a point where my plants node spacing is tighter, bushier, and still green and Lucious. Any help would be greatly appreciated. I can provide pictures if needed. Thanks!
 
#2
How are you growing the seedlings? If they start out tall and lanky then this usually carries over into veg
 
#3
Saul_Goodman7 said:
Hello everyone, as the title says I need some help with LEDs. I posted a while back about magnesium deficiency and purple stems, found out my lights were way too intense. I turned them down and my plants turned green and starting growing immaculately.

Having said that, I struggle to find correct lighting heights and intensity. Right now I have a 450w led in my 4x4 veg tent that is only set to 10% at around 20 inches from the canopy. If I go any higher than that my plants start to show the exact same symptoms as before.

I know vegging plants don’t need a ton of light, but only 10%?? Doesn’t add up based off my prior experience. Lastly, my plants always grow a little tall and lanky instead of bushy. No matter what strain. They all grow similar and I am trying to get to a point where my plants node spacing is tighter, bushier, and still green and Lucious. Any help would be greatly appreciated. I can provide pictures if needed. Thanks!
Click to expand...
please post make and model of your grow lights ..
Plants stretch if the light is not close enough , the upper leaf's will close or fold up like a envelope if the light to close or making to much heat for the plant.

Sativa strain can not handle the lighting like Indica..... Big time truth when UV-B lighting is being used ,
Purple stems to me is a micro nutrient issue..
 
#4
Set your light at 65% at 30 inches.
I find this to be the magic number.
See if it works for you.
 
#7
It's a balancing act...light, watering, and nutrition. I put around 35W/ft² of LED in my flower tents, hang the light as high as I can, and manage the dimmer so my uppermost fan leaves are flat, level, and vibrant green. Any deformation (taco-ing, twisting, edge curl, etc) or other colors, and I turn down. I haven't found a PAR level that works for every grow.

There are lots of ways to manage lights, so this is just what's worked for me.
 
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