I can't solve what diagnose

[DrWho19xx]

Hey guys !

I got a problem with one of my plants and I'm having issues diagnosing.. I never had this issue before.

Curls up, dries up and brown/yellow color. Both top/middle leaves.

Soil, pH 6.4, 21c/70f, CFL/LED, they get some extra nutritions once a week (npk: 8-3-5). Mid veg. ~30% humidity. I know it's low, foil them twice a day + humidifier. My other plants has no issiues.

Flushed it in pH 6.5 (saw somewhere that some nutritions works better above 6.3 ?)

 

[mowood3479]

They look pretty good to me. Idk why part of the leaf curls up and dies like that.

If they are growing I wouldn't do too much to try to correct the issue, as they get bigger it shouldn't matter much if u lose a leaf or two...
Just my two cents.
I think sometimes growers take too much corrective action trying to fix issues and end up stunting things worse.
I could be wrong tho

 

[Big-Narstie]

Calcium? What water u using? Try a ph of 6.8 see how they look.

 

[DrWho19xx]

Well, she is a little shorter but bushier/fatter then her sibblings but not in an unhealthy way. The middle fan leaves are the ones affected when checking close up. She is not "light praying" as the other ones.

My last time all the leaves where almost perfection until late stage of flowering, so perheps I'm working myself up over details when comparing ?

 

[DrWho19xx]

Calcium? What water u using? Try a ph of 6.8 see how they look.

From tap to open container "A" atleast 24h to "air it out", I got a ~8pH from "aired" water.

I usually pour from container "A" to "B" with height, to get some air in the water for the roots. (If this works, I dont know but whats the difference from a bubble stone?)

Then in container "B" I drop some fresh lemon juice to lower the pH, wait 15 min, check again, then into the soil.

Do you think I would need to add more Cal if my nutes ar[FONT=Arial, Helvetica, sans-serif]e 8-3-5 ?
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[aridbud]

https://www.420magazine.com/forums/how-to-grow-marijuana/71664-plant-abuse-chart.html

 

[Dog Star]

It looks like too much nutes burn..

 

[DrWho19xx]

I'm just gonna chill on the nutes and adjust the pH till 6.8 and see how it goes. Even tho it's once a week on minimum dose haha. Perheps very nutritios soil then.