what shall i do to fix this browing on leaves? flush?? (Images)

[rock lobster]

hey everyone, i dont know of this is nute burn or something else. ive checked as many of the possibilites but still not sure. hopefully someone here can tell me what is wrong. it seems to be affecting all of the 5 plants except 1. in the beginning of the grow I was using organic but now thye are in soilless. i feed every other day for a week now (not a normal amount i use to)

anyway here are the pics. if this is nute burn, should i flush them? and if so can someone link me a tutorial on how to flush.

 

[max316420]

That is a lack of food, if you flush its just gonna get worse

 

[max316420]

Promix has no food added so if your going lite on your food then their gonna show signs of underfeeding which is what your ladies are doing

 

[MrGhettoGrower]

It looks fried to me!
What type of dirt/nutes yo using?
Before and after the transplant?

 

[rock lobster]

Promix has no food added so if your going lite on your food then their gonna show signs of underfeeding which is what your ladies are doing

promix?

using age old organic grow nutrients

 

[rock lobster]

It looks fried to me!
What type of dirt/nutes yo using?
Before and after the transplant?

i was using age old organic growing soil, then switched them over to sunshine peat blend.

 

[DrFever]

well they to me look like there kinda getting burnt try flushing IMO

 

[max316420]

promix is plain, are you feeding them when you water them?