Help With Diagnosis, PLEASE..

[ElManiaco]

Strain is OGRaskal Fire Alien Kush - male
Media - Happy Frog soil w/ perlite
Growth stage - 5 week veg.
Nutes - Bio-Tone Organic 3-4-4 w/ myco. & beneficial bacteria
Ph range - 6.2 to 6.8
Water every 3-4 days with cal-mag (5-10ml) every other watering.
Temps - Day 67-76 deg. / Night 60-65 deg.
Rh - 40-60% (trying to raise)
Area affected is larger & older fan leaves only, new growth seems fine.
Pics....

 

[mmmdankbuds420]

Hope this helps a little

 

[ElManiaco]

Thanks but the graphics are not too detailed for me to make a match. I've look at various charts, pics, and other deficiency related material but the descriptions don't match 100%. I'm hoping someone who has dealt with this particular issue could chime in.
I've been using the same regimen on 3 other grows and multiple strains but this has me stumped. Tried troubleshooting by flushing, increase/decrease cal-mag supplementation and nothing.
New growth not exhibiting problems, only older/ larger fans.

 

[ElManiaco]

A friend told me it's probably strain related within the OGRaskal Fire Alien Kush.
Has anyone seen this issue with FAK?

 

[boo]

I'm growing raskals og cantelope kush, we call it crog, it shows the same tendency...kinda looks like a wave of nute burn to me because it just happens for no apparent reason...it goes away and isn't an issue in flower but it sure did pucker me...I grow with completely different nutes but it's coincidence, same line, give or take

 

[Dunge]

Looks to me like some insult received weeks ago.
All the other veg is too healthy for there to be much wrong presently.
Lush plant.

 

[altitudefarmer]

Looks to me like some insult received weeks ago.
All the other veg is too healthy for there to be much wrong presently.
Lush plant.

agreed. I usually remove those giant fan leaves if they are shading growing shoots. I would chop those damaged leaves for sure.

 

[ElManiaco]

Thanks @boo, @Dunge, & @altitudefarmer for your info, much appreciated.
I did think it was the ph issue I had 2 weeks ago but at the same time it's progressed throughout the same leaves affected. Then it's starting on other bigger/older fan leaves and progressing little by little.
I will keep a close eye on him & see if any newer growth starts to do the same. I would cull him but I really like the traits he has for persy breeding/seeds. He's very vigorous, stout, symmetrical, & has very nice internode spacing for my needs.
Thanks again! ;)