Grow Mediums Problem with leaves Auto coco Led - MARS II 400 - Northern Light Automatic

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Hi Guys, could you help me? Two of my plants don’t get better. I am wondering, could it be due to humidity or wrong PH, or maybe something else. I would really appreciate if you could look into my question.


Seeds, came out on May 23rd:

1) Northern Light Automatic > Royal Queen Seeds (Biggest problem)

2) CBD Med Gom Auto > CBD Crew (Average problem)

3) Sour Diesel Auto > Humoldt Seed Organization (more or less OK)


On May 28th came out:

4) Blue Dream Auto > Humoldt Seed Organization (more or less OK )



Mars II 400 LED

Tent 70x70x160.

CANNA COCO PLUS 50L - 70%
PERLITE 10L - 20%
Vermiculite 10L - 10%

Humidity 70-80 %
Temperature for:
26C Day
17-22C Night



Week nr.4; June 15th, per picture can be seen that everything is OK.

Wather - RO

Canna A&B – 2,25ml/L

Rhizo – 2 ml/L

Zum - 2,5 ml/L

SENSI CAL MAG 4-0-0 - 1ml/L

Boost - 0 ml/L

PH – 5,5 ( But I have feeling that my PH meter was showing wrong figures, and in reality PH could be around 4,5 already for a while )

EC - 1,2


Week nr.4; June 18th, you can see that leaves have rolled up

Wather – RO

SENSI CAL MAG 4-0-0 - 2ml/L


Week nr.5; June 22nd

Wather - RO

Canna A&B – 2,75ml/L

Rhizo – 2 ml/L

Zum - 2,5 ml/L

SENSI CAL MAG 4-0-0 - 2ml/L

Boost - 2 ml/L

PH – 6 (But I have feeling that my PH meter was showing wrong figures, and in reality PH could be around 4,5 already for a while)

EC - 1,87


Week nr.5, June 25th Flush with 5L/per pot. (Repaired my PH meter, PH 6,12.)


Now, I returned from 4 days absence and I cannot understand, whether it is already inevitable leaves issue caused by PH or problem is still continuing; before I left, I did Flush them, but this time with correct PH (6,12), as I repaired my PH meter.

But, starting already with first days, leaves are curling, and rolling up, but then it is getting better again.


Grow Box
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1) Northern Light Automatic > Royal Queen Seeds (Biggest problem)
P3470847.JPG
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P3470844.JPG
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2) CBD Med Gom Auto > CBD Crew (Average problem)
P3470835.JPG
P3470823.JPG
P3470907.JPG
P3470912.JPG
P3470919.JPG


3) Sour Diesel Auto > Humoldt Seed Organization (more or less OK)
P3470859.JPG
P3470863.JPG
P3470864.JPG




4) Blue Dream Auto > Humoldt Seed Organization (more or less OK )
P3470870.JPG
P3470871.JPG
 
Week nr.4; June 16th
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Week nr.4; June 18th
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Week nr.5; June 26th
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Could it be a Cal mag defecincy since LEDs take more Cal mag than Normal plus your in Coco coir that sucks up Cal mag like no tomorrow pretty sure this could fix on going issues add calmag full strength then your nutes at half or whatever

Sent from my XT1585 using Tapatalk
 
When you mix medium for next run, add some dolomite lime. 1 tablespoon per gallon pot size.
 
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