What is wrong with my OG?? (PICS)

[ziv2002]

Hello,
I have three plants going: one OG Kush, one Blue Dream and one chemdawg.
I grow them in soil under 250w + 400w HPS lamps.
Just put them in flowering last week, the last time they got 1ml Bio-Grow and 1ml Bio-Bloom.

while the OG and the Chemdawg are growing just great - the OG looks bad:

the leafs are yellow or light green (mostly the top part of the plant), the stem is part red/purple.
and the growth has stopped :-/

can any -one tell me what to do??
I was thinking maybe a nitrogen deficiency, and maybe some Phosphorus deficiency
but im not sure what should i do so better asking you guys...thanks!

 

[Mhogs]

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[jdgrow]

give it a flush mate, cud b blocked up, think i read red stem cud mean over feed? nt sure but gd luck mate

 

[iSmokealottaweed]

Looks like your ph is to low and is locking out nutes.
What are you ph'ing your water at and whats the ph of your runoff water?

 

[ziv2002]

Looks like your ph is to low and is locking out nutes.
What are you ph'ing your water at and whats the ph of your runoff water?

Im using PH DOWN from GHE.

the water im using is around PH 5.8-6.2.

Never did check the run off water PH - is that the water that drip
from the bucket after watering?

if so - why do i need to check it? can it indicate me what
is the PH of the soil or something?

 

[sacpirate]

ph run off is a waste of time i think. u are to low tho my friend. soil likes 6.5_6.8. check this chart out

 

[ziv2002]

ph run off is a waste of time i think. u are to low tho my friend. soil likes 6.5_6.8. check this chart outView attachment 2554231

Thanks man!
but according to the chart if my soil is 6.5-6.8 the plant can still feed on the nitrogen no?
it might be some other deficiency?

 

[Alexander Supertramp]

They look hungry too me...1ml per how much water? Feed them puppies.

 

[sacpirate]

Thanks man!
but according to the chart if my soil is 6.5-6.8 the plant can still feed on the nitrogen no?
it might be some other deficiency?

yes however the ph parameters u stated were 5.8_6.2. not 6.5_6.8 so im not sure what your asking? and i to am curious on the ratio u use for nutes. 1ml/? improper ph and low feed is a disaster waiting to happen.

 

[ziv2002]

yes however the ph parameters u stated were 5.8_6.2. not 6.5_6.8 so im not sure what your asking? and i to am curious on the ratio u use for nutes. 1ml/? improper ph and low feed is a disaster waiting to happen.

1 ml per liter.

sorry :-/