Yellow edges on leaves.

[Hydrolicious]

Hi all. Not sure what’s going on here. I know there is a bit of nutrient burn, but I don’t think that’s the cause. The two pictured were started a couple weeks after another plant and I was lazy and shared their feed anyway.

 

So the two are both critical orange punch auto/fem. both are being fed the same amount from the same source. I have been diluting their feeds since the nute burn started. They both have the media from the same batch of Coco coir and vermiculite mix. Since germination, they have been under LED lights on veg for 2 weeks, then flower since.

 

What’s everyone’s thoughts? To me it appears that it could be one of many different things.

Cheers

[The Stoned Jester]

Any chance of getting a natural light / lights off pic to see it better, the led colour makes it hard to see properly.

 

Also check this chart to see if you can find a match to help diagnose problem further.

 

Looks like possible Potassium or Magnesium deficient, what nutes are you feeding it exactly?

Edited April 11, 2019 by The Stoned Jester

[SOOTY]

Can't help with the yellow edges sorry. But I would have both veg and flower switches on, on the blurple led.

[stickymickey]

Instead of just diluting the nutes flush completely with pHed water so that it clears any salts that remain in the coco. Not with the drip rings either, pour it into the pot so it pools up then flushes all the way through. Give it a day to sit in clean coco, then continue with half strength nute mix the next day and make sure that you are getting substantial run off out od your pot at least daily.

[Medical18]

I had the same on my first ever grow it looks nute burn leave the nutes at the same if you have advanced nutrients piranha or equivalent if not do a flush of ro water and lower your nutes slightly find the sweet spot might take a couple of weeks I don't know what nutes you are using more info please

 

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[Medical18]

I had the same on my first ever grow it looks nute burn leave the nutes at the same if you have advanced nutrients piranha or equivalent if not do a flush of ro water and lower your nutes slightly find the sweet spot might take a couple of weeks I don't know what nutes you are using more info please

 

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yes I was using the same medium.

 

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[afgahn bob]

cause all ure plants look the same, I'm guessing ure not using some sorta cal-mag in feeding program ?

 

just a thought looks very mag deficient 

[Hydrolicious]

I am using house and garden, A and B for Coco. I have been told that I don’t need cal mag with that brand?

[stickymickey]

I am using house and garden, A and B for Coco. I have been told that I don’t need cal mag with that brand?

You'll still need calmag most of the time, even with coco specific nutes.

[Hydrolicious]

Sorry for the late reply guys. Pretty sure it was Nute burn. Fed plain water for a couple days then reduced strength for a couple weeks and she is now in her last week of flowering. Leaves came good and flowered normally. Though yields appear slightly less than her sister.

 

Cheers all.

 

 

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