OG Kush feed help please

[Grower2020]

Hi I'm is desperate n33d of help with my og kush grow.
I've heard that og kush is a heavy feeder and im wondering if anyone can please help me . 3 previous coco grows all successful but different stains and first time growing og kush. Plants seem to be displaying signs of calmag deficiency mainly mag . Slowed growth and light green/yellow between the veins and on edges .
Current info is 5.9 6.0 ph . Ec total is 1200 . 600ec calmag and 600ec a and b .canna nutrients.
Runoff ec is 900ec
Temps between 19 and 25 degrees . Humidity is between 70-80rh .
It says og kush is a difficult strain to grow I'm guessing because it has a specific ec value it likes and maybe added magnesium and cal . Anyone have any specific numbers that might help me please? I read on a journal that a guy was running an ec of 1800 ? Which is super high compared to what I'm used to

 

[Nunyabiz]

You could try a magnesium foliar feed

 

[Grower2020]

You could try a magnesium foliar feed

Hey nunya long time old friend . Yeah I just did a magnesium foliar this morning. Hopefully a daily shot will help . Just need to try and get it into my medium also at the right ec increase so it doesn't come back when I can't foliar feed anymore. Any idea what ec my mag foliar spray should be ?

 

[Nunyabiz]

Did you buffer the coco prior to planting in it?
Or was it already a prebuffered coco?

Coco Coir Bricks - How to Prepare and Buffer Coco Coir - Coco For Cannabis

This tutorial covers the process of selecting, preparing & buffering coco coir. Includes perlite ratios & tips to make coco the best media for cannabis

www.cocoforcannabis.com

 

[bluter]

rh is a bit up there for an indica. not high enough to hold it back but i'd watch it in flower.

 

[Grower2020]

Did you buffer the coco prior to planting in it?
Or was it already a prebuffered coco?

Coco Coir Bricks - How to Prepare and Buffer Coco Coir - Coco For Cannabis

This tutorial covers the process of selecting, preparing & buffering coco coir. Includes perlite ratios & tips to make coco the best media for cannabis

www.cocoforcannabis.com

It's pre buffered coco coir but I had low runoff ec and didn't realise it so i ran 1200ec solution through the plants until runoff ec was In range. My calmag ec is half of the total ec . So i buffered it by running fullstrengrh nutes through until runoff was right .