Red Russian XXL Issue

[BigRedRussian]

So ive been vegging for about 6 weeks in 52L pots of coco using rtw strategy.

About 2 weeks ago spotted what i thought was a zinc def so flushed coco with 5.5ph water left a day then went back to 5.7ph advanced nuts regime pretty much as follows for 20litres:

Calmag upto 0.3ec
Sensi Coco Grow Part A + B upto 1.4ec approx 50ml ea
B52 20ml
Pirahna 20ml
Then add
6ml Root Excel
Ph to 5.7

Now it started to fix issue on new growth but still aint looking right 2 weeks after and grow has slowed compared to two others of same seed . I have been pretty water happy as this is first coco grow but thats a learning curve for myself

Looking for some help in where to start as the two siblings are loving life.

Room temp is a bit high at 31c
RH 45 light on to 60 light off
Lights are hps 2 x 1000w cooltubes in 1.2x2.4x2.3 tent
4xoscillating fans + 6inch fresh intake fan

Maybe im missing something obvious

Any constructive criticism welcomed.

 

[AngryBird]

I'm sorry, but, what do you see as wrong?

 

[BigRedRussian]

If you look closely at the pic you can see the leaves have distinctive green veins and yellowish middles on some of the leaves.

 

[BigRedRussian]

Its hard to capture with the phone camera but some pics are more evident than others

 

[AngryBird]

 

[AngryBird]

Sry bad pic
Magnesium..

 

[HempFire]

Adding a dose of Epsom salts should help. I would also test the runoff of the coco to see what the actual pH is in the pot. I generally allow the pH to drift between 5.8-6.0 in the pot.

 

[BigRedRussian]

Cheers guys ill check ph dose up mag and get back to you.

 

[BigRedRussian]

Ph runoff at 6.0 gave a touch more calmag in nutrients. And added a touch of it also to foliar spray with B52 & Rhino skin. Will report back in a few days

 

[BigRedRussian]

So the plant looked better after following the suggestions you guys put forward. However it has turned again. Started looking like a bit or clawing and the turned to canoeing after one day have already dropped the b52 and calmag down as both had a far bit of N . Moved lights up to ensure it wasnt light induced stress.Any one have any other suggestions where to look. I have attached photos of its sister in the exact same enviroment and nutrient schedule for reference.

Room temp is at high at 28c
RH low 40's light on to 55 light off
Lights are hps 2 x 1000w cooltubes in 1.2x2.4x2.3 tent approx 40cm away from tops now at 50cm
4xoscillating fans + 6inch fresh intake fan

 

[Remystemple]

So the plant looked better after following the suggestions you guys put forward. However it has turned again. Started looking like a bit or clawing and the turned to canoeing after one day have already dropped the b52 and calmag down as both had a far bit of N . Moved lights up to ensure it wasnt light induced stress.Any one have any other suggestions where to look. I have attached photos of its sister in the exact same enviroment and nutrient schedule for reference.

Room temp is at high at 28c
RH low 40's light on to 55 light off
Lights are hps 2 x 1000w cooltubes in 1.2x2.4x2.3 tent approx 40cm away from tops now at 50cm
4xoscillating fans + 6inch fresh intake fan

It kind of looks like what mine were doing when the lights were too close.