New Grower Light burn?

[Blackrain]

Could someone tell me if This Is light burn, I think my led is a bit too close (because the wires to hook it to the top of my tent are long as fuck), I don't think it could be anything else as it's only the top 3 or 4 leaves on my tallest 2 plants.

 

[STILLSMOKIN]

Looks nute burnt on last pic but one looks like something else.

 

[Blackrain]

Looks nute burnt on last pic but one looks like something else.

It's all the same leaf, ive gone ahead and done a makeshift contraption to hold my led higher and hopefully it'll stop, no more sativa photos for me anymore.

If it looks any worse tomorrow I'll get some better pictures with lights on

 

[AutoWonders]

Looks a little like both. The way it is working on the side of leaf looks like light burn, however, the leaf doesn't look like it's folding down. How close and what kind of light?

 

[LedGuy74]

Not light burn I'm sure that's a nutrient issue. Thats more or less the first signs of peoples nutrient issues... we need full pics of the plants... how large are they what sized pots are they in? Are you feeding? What is your medium? What brand? For all I know you are using a slow release fertilized soil and watered to often and in turn released to many nutrients at once causing the burnt tips. But idk enough all I know is id put money on it not being an LED light burn.. If the LED will cause anything itll be a calcium deficiency imo as unless you are using a very high powered led its just not common... Ill run my led’s 2-3 inches from foilage at time. Just wait a few days see if it gets worse ect... If it does get worse id recommend a pic of the entire plant and pot.

 

[Blackrain]

Not light burn I'm sure that's a nutrient issue. Thats more or less the first signs of peoples nutrient issues... we need full pics of the plants... how large are they what sized pots are they in? Are you feeding? What is your medium? What brand? For all I know you are using a slow release fertilized soil and watered to often and in turn released to many nutrients at once causing the burnt tips. But idk enough all I know is id put money on it not being an LED light burn.. If the LED will cause anything itll be a calcium deficiency imo as unless you are using a very high powered led its just not common... Ill run my led’s 2-3 inches from foilage at time. Just wait a few days see if it gets worse ect... If it does get worse id recommend a pic of the entire plant and pot.

At the time it was about 3-5" away but I believe during the light on period (I was asleep) that the leaves stretched a lot closer to the light as my fan leaves on the top practically go straight up towards the light, I'm in Biobizz all mix and feed it 1ml veg, 3-5ml bloom ( each gets different) and 2ml calmag for every 1.5L of water.

One is in a regular 10l pot, two of them are in 10l air pots and 1 of them is in a 1 Gallon smart pot.

Those weren't fed for maybe 3 or 4 days and its brown leaves instead of yellow and they are curling upwards at the tips, I think the problem is solved with me raising light to inbetween 12-15".

 

[bignugz420]

Looks nute burnt on last pic but one looks like something else.

Nute burn

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[Blackrain]

Wasn't nute burn, light burn for sure as it was only the one leaf that was the highest on my plant and closest to the light, it had been close enough to the led over night where it was possibly touching it