Browning of the leaves, please some advice

[Ice-R]

In week nine with my autoflower amnesia haze and since 2 days top leaves start having brown spots and than the whole leave gets brown/yellow and curls up. i would think nutrient deficiency but don´t understand how as i am feeding acording to manufacturer and ppm looks to me like its it the right values. But obviously somethings off.

Watering
09-12-2020 Feeding water: Ph 6.8 ppm 100 Runoff water: Ph 7.1 ppm 380
No Calmag & no Cana Terra Flores (did feed this 02-12-2020

16-12-2020 Feeding water: Ph 6.3 ppm 680 Runoff water: Ph 6.7 ppm 890
5ml/10lt Calmag & 50ml/10lt Cana Terra flores

 

[Dontjudgeme]

Good reference chart. Are you in soil or coco?

 

[hotrodharley]

You have a calcium deficiency.

 

[Ice-R]

Good reference chart. Are you in soil or coco?

Soil

You have a calcium deficiency.

So how would i resolve this? just give more calmag?

 

[hotrodharley]

Soil



So how would i resolve this? just give more calmag?

Not with your runoff measuring so high. I suspect lockout. Often calcium is the offender. I don’t like flushing in soil.

 

[Ice-R]

Not with your runoff measuring so high. I suspect lockout. Often calcium is the offender. I don’t like flushing in soil.

Hi so is 890 considered high? What should the runoff ppm be?

 

[hotrodharley]

Hi so is 890 considered high? What should the runoff ppm be?

You fed 680. Runoff is 890. Meaning they’re not using the nutrients you gave before.