Northern lights brown spots

[Beezelbuz]

I have an issue where only on the NL strain am I seeing brown spots on leaves. This to me looked like a calcium deficiency so I upped the cal/mag in her grow solution.

Current grow solution is mega crop a and b. I am feeding the larger girl around 1.4 ec and the small girl .85 ec. Ph is between 6.0 to 6.2.

Someone said this looked like a disease but since this same problem showed again on the same strain on another plant I think its a strain specici deficiency. I have seen no improvement since increasing cal/mag. I still see new leaves taking on brown spots.

The smaller girl also looks very weak as you can see new growth looks like a big ball of small wilty leaves.

First three pics are small girl and last three are larger older girl

 

[Serty97]

Light burn/stress!

 

[MICHI-CAN]

Light burn/stress!

Wow. I've grown several Nirvana NL's. Never had this. My best guess is a root related issue. When is the last time you flushed them? How dry do you let them get? And your Ph should be bright dark green at this stage. I am not familiar with your nutes. I'll keep scratching the noggin. Maybe the seed.

Slide a bamboo skewer into the soil close to the stem. All the way or as far as it is long. Before watering. If skewer is wet? You are most likely dealing with root rot.

 

[Beezelbuz]

These are seedsman seeds and forgot to mention I'm growing 100 percent coco that has been buffered. Doubt I got root rot on both plants that are the same strain... it just seems like the symptoms match exactly and there both same strain. Got 4 other strains and none of those show any of those same signs

 

[Beezelbuz]

These are seedsman seeds and forgot to mention I'm growing 100 percent coco that has been buffered. Doubt I got root rot on both plants that are the same strain... it just seems like the symptoms match exactly and there both same strain. Got 4 other strains and none of those show any of those same signs

 

[MICHI-CAN]

These are seedsman seeds and forgot to mention I'm growing 100 percent coco that has been buffered. Doubt I got root rot on both plants that are the same strain... it just seems like the symptoms match exactly and there both same strain. Got 4 other strains and none of those show any of those same signs

Rot is still possible. But I'll take your side. Chalk up another witnessed failure from Seedsman. Mine are in custom organic soil. No issues. Except the few I ran in FFOF. But that is crap soil nowdays.