Outdoor Illness Mystery

[Bombud 916]

Hey,and good lookin to help a homie out.
To start out the plant is in veg and idk if its gunna start bloom. Im in Sac and its now August.

But thats not the problem im seeing slowly that one of my plants slowly burning and dying, it looks like.

I don't know if its a Calcium deficiency or a phosphorous deficiency. Or neither.

Its strain is Kush with a 40/60 mix of perlite/coco.
Its feeding be steady at 500-600 ppm.

2ml of Cal-Max
7ml big bloom
5ml of Foliage Pro
1ml Snow Storm Ultra
3ml Pro Teckt

From tap that sits in sun for 2 days.

Any advie would be greatly appreciated.
Might just start flushing cause i see it in settling in different leaves on the plant.

UPDATE - Out of the 8 plants I have 2 are showing the illness.

http://i240.invalid.com/albums/ff26/TripleFTW/veggroup1-1.jpg
http://i240.invalid.com/albums/ff26/TripleFTW/sickleaf1.jpg
http://i240.invalid.com/albums/ff26/TripleFTW/sickleaf2.jpg

 

[xX Kid Twist Xx]

to me that looks like sun burn or bleaching from the intense sunlight. the 2 plants showing it do they get more light then others? outside maybe rain drops magnifying the sunlight?

 

[phenotyper]

Have you checked for pests? Specifically leaf borer? I think Kid is spot on, but check for pests too (underside of the leaf) because LBs can cause that pattern as well.

 

[Dr. Detroit]

It's calcium deficiency, but not a huge one.

I'd probably switch from perlite to vermeculite or pumice. Perlite tends to float and separate from the medium, lessening its effectiveness. I prefer pumice, though it's the heaviest of the three aerators. There are trace elements in it, and it's organic.