Leaf Problems

Hi all

Few of my plants, about half of them all on the end of the irrigation system lines, have these nute burn style marks on the fan leaves. I assume it is nute burn but I wanted to check with the pros.

Bud formation and growth still seem rapid and strong regardless of fan leaf markings.

Thanks in advance!

LED Lighting
General Hydroponics Tri Blend
Coco Medium
5g Pots

Strains are Jellium & Purple Kush Mints

Bump

hey bro hows it going ,i dont really know but it look like a little ph/nute burn maybe some lockout, whats your feed Ec/ppm & Ph at,do you water with plain water between feeding and whats your runoff water? also tap water or RO if your room temp and humidity is good also

what kind of LED ? any more photos

https://www.growweedeasy.com/marijuana-symptoms maybe mag def?

The ideal pH for coco coir cannabis grows is between 5.8 and 6.0 in the vegetation stage. The best ph for flowering is between 6.0 to 6.2. The max ph range you’d want would be 5.5 to 6.5, growing pot in coco outside of that pH range will cause nutrient problems.

a good read about Measuring the pH of the runoff water in coco
(https://happypotfarmer.com/best-ph-growing-weed-coco-coir-canna-coco-nutrients)

here is another handy chart but more for recirculating systems,i dont know about coco systems but i guess you could still measure runoff and adjust accordingly. do you get any runoff? how do you tell how much to drip feed, dose it drain to waste at all. how do you tell/know what they are consuming?


hey you say its at the end of a line, i cant see why the nutes would be different other then the volume of nutewater being less, further down the line, i would dump res and restart with a slightly lower EC and be checking the runoff on all plants,or otherwise if there is just 2 plants with problem and you dont wana change res cause the others are fine you could mix up a bucket of there own solution to try and correct the problem and tip in manually.. idk its hard to tell there are so many variables at play, how do your nutes sit and how do they get mixed up maybe it locksout some plants may tolerate and be able to feed higher others may have problems, i know it can be a nightmare growing different strains in the same res and tap water can cause salt buildup or lockout causing burn with some nutes and strains but be fine with others, is it on both strains? How is your light is it too intense?

Thanks bro!
Gonna probably clean out res and start fresh

It doesn't look like classic nute burn to me.

Cycad said:

It doesn't look like classic nute burn to me.

Click to expand...

I know that's why I'm perplexed.
My PH has been 6.1-6.5 consistently.