HELP! Bronze margins, Late flower

[Tjorp]

Help my guys!

I used advanced nutrient -ph-perfect 3-part. Week 6 going in flower. Week ago this started spread and changed to other nutrients.

coco, dripfeed irrigation, whit ph-perfect Ph-7.4 Ec-2900. I dont really trust those nutrients anymore.
is that from ph problem -> nutrient lockout

changed water and nuts, palanced ph-5.5 and ec 2200( didnt want to lover to much at time)

 

[9fingerleafs]

that seems like a potassium/calcium deficiency, doesnt mean you need to add both, i think the potassium is causing the calcium to lock out. i think you should give more bloom and less grow but it be nice to see what others think

 

[Willyd]

To me it looks like potassium or zinc deficiency

 

[Willyd]

don't know why it did it like that but there ya go lol Iv'e found this very helpful.

 

[9fingerleafs]

yes, you see how the potassium deficiency when advanced shows calcium deficiency symptoms too

 

[Jordann]

Might be magnesium deffency late stage

 

[Tjorp]

I guess it's excess of Potassium. causes many nut locks.

i have occasionally added some PK-Boost. minimum doses still... But it could have been to much.

 

[Jordann]

Crushing iron pills have always worked for my girls. Looks iron drrivent sulfur bad enoughtnofind some sulfur

 

[Jordann]

I didn't mention my plants will be 3 weeks from 12,/¹2 hours. Any way Friday they will be 3 weeks in and they've done good really nice buds. I hope they have the good good wheel might the plants tale aasmd great 4 time one with 4 times sativa. I love Frome different e2 males and 1e females. I'm only just starting to get some feminized seeds. Maine grow a whack if auto and pack the xr4x4. Not sure yet see what comes up.