Thanks in advance

[ChefB202]

Problem: discoloration on lower fan leaves

Medium/grow method: Roots Organics original

Feed:Cold war organics bud bread, Angels touch and coming if age
and supplements used: cal mag pro from Greenleaf, Recharge, fishsh*t

water source:distilled water

Strain/age:Sour Bubbly around 5-6 weeks

light used:4x autocobs

Climate:75/80f

Additional info:feeding nutes at 1/2 strength, 24/0 lights

 

[ChefB202]

Anyone?

 

[Arthur]

Ph of feeds, ph of medium (not runoff) and rH?

 

[ChefB202]

RH: 50-60%
Feed PH: 6.5
Soil PH: 6.4

 

[Arthur]

The yellowing between the veins, and the misshapen leaf both have me leaning to a lack of calcium.

 

[ChefB202]

I have been doing 1.8g of calmag pro 1xweek, maybe do it 2xweek?

 

[Arthur]

If your using distilled water, never plain... always cal mag.


Edit: the only issue I can see with cal/mag all thru is some strains won't use as much calcium, a buildup of calcium can lock out Phosphorus, so some may require a tapering off to balance Phosphorus uptake during flower.
Hope that made sence.

 

[ChefB202]

I am using distilled water, dang feel like such a noob

 

[ChefB202]

If your using distilled water, never plain... always cal mag.


Edit: the only issue I can see with cal/mag all thru is some strains won't use as much calcium, a buildup of calcium can lock out Phosphorus, so some may require a tapering off to balance Phosphorus uptake during flower.
Hope that made sence.

It totally makes sense, thanks

 

[Arthur]

I am using distilled water, dang feel like such a noob

Don't feel like a noob, we all make stoner mistakes sometimes. I has to hide my first harvest...using the term "harvest" very liberally here... but that was before the internet. Hopefully you'll see a pickup soon.