Bottom Leaves Yellowing

[Meowza]

Hey everyone, I know this is a question for the Infirmary forum but there’s many more members viewing this forum so I’m hoping to get more/quicker answers here. I’m about halfway through week 6 and I’m becoming very concerned about the bottom leaves of my 3 Northern Lights yellowing and dying off. They started yellowing about 5 days ago, at that time I had probably waited a day longer than I should have to feed them so I figured they were just really thirsty. Watering with my normal dose of GH FloraTrio nutrients did not help and now the bottom leaves are looking pretty rough. Top growth is all healthy, but the illness does appear to be slowing rising up the plant. Looks to me like it could be Nitrogen deficiency but I’m new to growing so I’m not sure. I would think that if it was a nute deficiency it would have gotten a little better after feeding, not worse. I want to water them today, please let me know if I should make any changes to my nutes, my feeding schedule calls for this:
FloraMicro: 4ml
FloraGro: 1ml
FloraBloom: 5ml
CALiMAGic: 2.5ml
All measurements per gallon, thank you for any help!

 

[Fitzy]

Hey everyone, I know this is a question for the Infirmary forum but there’s many more members viewing this forum so I’m hoping to get more/quicker answers here. I’m about halfway through week 6 and I’m becoming very concerned about the bottom leaves of my 3 Northern Lights yellowing and dying off. They started yellowing about 5 days ago, at that time I had probably waited a day longer than I should have to feed them so I figured they were just really thirsty. Watering with my normal dose of GH FloraTrio nutrients did not help and now the bottom leaves are looking pretty rough. Top growth is all healthy, but the illness does appear to be slowing rising up the plant. Looks to me like it could be Nitrogen deficiency but I’m new to growing so I’m not sure. I would think that if it was a nute deficiency it would have gotten a little better after feeding, not worse. I want to water them today, please let me know if I should make any changes to my nutes, my feeding schedule calls for this:
FloraMicro: 4ml
FloraGro: 1ml
FloraBloom: 5ml
CALiMAGic: 2.5ml
All measurements per gallon, thank you for any help!

Wat is the medium soil coco? Wat is the run off ppm and ph also wats the ph going in? I will help with wat I canm

 

[BII]

Others will presumably comment about better diagnosing potential deficiencies, pH lockouts, etc.

But if it's just a few of the most bottom leaves being lost, I wouldn't get concerned; as long as the problem doesn't progress to higher leaves. There's probably less leaves affected here than most would remove if they did the most minimal defoliation, picked-off a few of the leaves in the worst shape, with the very bottom ones not getting much light, not doing or mattering much (some just removing them all; look into lolly-popping), and often just dying-back on their own.

 

[redxber]

N deficiency seems to usually show up in veg and includes stems turning purple/redish. Your more In flowering so I would vote on K deficiency.
I just experienced something similar.

It tends to show up in early flowering, lower leaves yellowing and mobile with that browning. Tips of upper leaves can show some browning also. Can be caused by having added too much cal/mag in the veg stage causing a build up of salts in the soil which cause the plant to heat up and K gets locked out. With liquid nutrients it Can help correct this by flushing the soil medium and backing off on the cal/mag when watering
I am using organic dry amendments in coco and was ph’ing my water with cal/mag. So I just used normal ph’ed water for the next couple waterings then hit them with a compost tea I brewed for early flowering. This seemed to help.