Rusty Spots Startting from Serrated Leaf Edges

[Beerhunter CDN]

Hello All!

It looks like I might have this problem sorted out. As mentioned earlier I flushed her coco by hand with weak nutes and left her for a couple of days on the dripper system but extended the run time. Following that I increased my nute concentration to about 2/3 of what I had been feeding her prior to issues. Over the last couple of days I have been documenting her progress by taking pics of one leaf. There hasn’t been any advancement in the rusting as far as I can tell and her bud sites have grown over this time.

No change on this leaf (one of the worst affected)

 

[Arthur]

The leaf won't correct, your watching the it doesn't progress to others. Looks like they're feeling pretty good, got those solar panels clocked to the lights.

 

[JS550Fan]

Good job on that one! You increased your base nutrient dosage? I'm assuming it includes cal and mag. Your plant is already very dark green, but it does sure look happy.

I'm chasing what I think is a K deficiency. Posted a thread in the infirmary. My first major organic grow problem!

https://www.autoflower.org/threads/leaves-yellowing-at-margins-tips-dying-los-organics.73350

 

[Arthur]

Good job on that one! You increased your base nutrient dosage? I'm assuming it includes cal and mag. Your plant is already very dark green, but it does sure look happy.

I'm chasing what I think is a K deficiency. Posted a thread in the infirmary. My first major organic grow problem!

https://www.autoflower.org/threads/leaves-yellowing-at-margins-tips-dying-los-organics.73350

The dark green could be from the Phosphorus deficiency, one of the first symptoms is the deep greening.

 

[Beerhunter CDN]

Thanks Gentlemen, I understand that the leaves won’t correct from the damage so I was just watching to see if the problem progressed or not. Most leaves are affected by it but I believe the problem is resolved.
@JS550Fan I have been following a nute schedule as I get used to feeding MC. I think this Blueberry plant is a lighter feeder than others I’ve grown. Basically, I flushed the coco and started over at a greater concentration when I thought the plant settled down, but not as concentrated as what she had been getting. I always add Calmag and carbohydrates for coco, but added a bloom booster recently as she moves into bloom. I did also water in some Great White microbes to help her rootzone out.
I’m glad I did a test run for the Solo cup grow as I’ve learned how I want to run the Auto dripper. In full swing she could very well be fed 6 times per day, something I couldn’t do by hand. Next project will be organic soil growing so I’ll be checking out your info a little more