***? Is this Nute burn?

[tater_salad]

These are 4 week old plants that just rapidely developed this problem. Everything was going good until this. The bottom leaves are effected. I'm running a DWC with an ultrasonic fogger that has been on 24/7. My PPM are about 525. PH 6.1. I'm using organic Botanicare Pro grow. Any ideas? How do I fix?

 

[tater_salad]

BTW it's on the bottom of the plants and not all my strains are affected.

 

[lowrydergrower775]

hmmm doesnt look alot like nute burn maybe some kind of def coming up?

 

[Roken]

Wassup brother,
I would have to say it's a phosporus defficiency, i would flush the meduim with plain water or if able flush with shugars and plain p.h balanced water. Then after a proper flush i would simply just give it a real mild nutrient watering. After this you should see some improvement, just make shure you flush her real good. Peace and Love!! Hope this help's man!
Roken.

 

[MrPuffAlot]

nute lock..

your ph is way to high. should be 5.5 -5.8 the highest.

if you look at the ph charts you'll see what your plants aren't able to
take in because of high ph.

goodluck

 

[lyfr]

drop you ph down a little as stated above. interveinal clorosis(yellowing between veins) is a sign of a mag. deficiancy, common in wk 3-4. i would mix a light batch of nutes with 1/4 tsp per gal of epsom salts. your damaged leaves wont recover, watch new growth. JMO do you let tap water sit out 24 hours...the clorine can lock-out mag, also others. BTW phosphorus def. cuases very dark green/red/purple leaves/petioles and leaves curl under dramatically.