A few leaves are turning out like this...

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About 5 or 6 here and there out of >100 for some reason. NFT system, 5.7 ph and nutrients fed as per the instructions (CF level normal but on the upper end). Is this a nute deficiency or nute burn? Or something else? Humidity is 60% at the most, almost 2 weeks into flowering.

Any help is appeciated. Thanks in advance, guys...
 
If it is the plants that get nutrient last then there is little you can do without messing up the rest of them. I suggest floral spraying the last plants with calmag. In the future try shorter NFT. Find a way for the plants at the end to get more nutrient. Maybe increase ppm or change your nutrient solution more often.
 
If it is the plants that get nutrient last then there is little you can do without messing up the rest of them. I suggest floral spraying the last plants with calmag. In the future try shorter NFT. Find a way for the plants at the end to get more nutrient. Maybe increase ppm or change your nutrient solution more often.

I usually allow ppm to drop with the water level then refill water + nutes to normal. I think I'll stop doing that and get some calmag.

Thanks a lot :)
 
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