Browning of the leaves, please some advice

[IceR]

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

 

[IceR]

Hi is there anybody on THC?

@Beachwalker would you have any idea?

 

[chemistry]

You hit your own nail on the head, no Canna Flores. You need more run off, that's why your PPM's keep rising.

Put up a close pic of the buds.

 

[IceR]

You hit your own nail on the head, no Canna Flores. You need more run off, that's why your PPM's keep rising.

Put up a close pic of the buds.

Hi Chemistry, are you saying i shouldnt have done that watering on the 9th without the nutrients (so should have used nutrients)? When you say “you need more runoff” what do you mean?

 

[chemistry]

Feed and water more, until the waste from your last feed is washed out by the fresh new feed, or you'll wind up with salt building up in your medium. And the bud shots are to see how close your are to finishing. I think your plant is trying to finish flowering, so if I were you I'd start to flush, by the end of the week you should have all cinnamon fronds and no white hairs.

 

[IceR]

Feed and water more, until the waste from your last feed is washed out by the fresh new feed, or you'll wind up with salt building up in your medium. And the bud shots are to see how close your are to finishing. I think your plant is trying to finish flowering, so if I were you I'd start to flush, by the end of the week you should have all cinnamon fronds and no white hairs.

Just to be sure: When you say start to flush do mean just water with plain water?

 

[SonOfAStoner]

you flush by adding plain water, no additives. Make sure to get a bit of run off so that you get some of that potential salt build up out of the medium.