Running into some odd issues.. necrosis in leaves during flower. Possible hard water issues?

[yourtreeshugger]

Hey everyone, things have been going great on this round of ladies but around week 5-6 in flower the leaves on 2 plants of the three are basically dying off and turning brown in spots.. can't figure out what could be causing it.

I use well water and theyre in a living soil medium, which should be plenty well fed to where I am almost leaning toward my well water potentially building up salts and causing toxicity? Any info is highly appreciated.. I've searched around some but haven't had much luck for this issue.
The purple one is also not putting on much weight anymore.. so far it is smelling absolutely fire and looking nice, but super low yield.. again can't figure why they're freaking out all the sudden.
Thanks guys/gals.

 

[coreywebster]

Really need various pictures of the whole plants so people can see where this is happening and what it looks like.

 

[Soil Growth]

Soil is legit, but it does have limitations.

How big are your pots? How long have your plants been in the pots? Have you added any nutrients or fed the plants in any way?

It's possible everything is OK, and your plants are just hungry because they've consumed most the amendments in your soil.

 

[yourtreeshugger]

It's happening on the tops of the plant at every flower site unfortunately.. both plants experiencing this.

They are in 7gal pots and soil was amended with a top dressing going into flower, so 4wk ago or so.
I'm mainly concerned with how the leaves are actually creating dead spots randomly. What kind of deficiency causes this? I would think only excess of something would be the issue. Will post more pics now

 

[yourtreeshugger]

The pic of whole plant isn't posting for some reason for the purple one. But more pics of different bud sites plus too bud site to show same issue

 

[yourtreeshugger]

Sorry I don't have names for these as I lost the damned tags right from the get go and so have no clue which is which.. likely that the purple one is the Grape Dragon though.
But the green one is worrying me in that a lot of its biggest leaves are very brittle and turning brown, not red or purple with anthocyanins but like they're actually dying or something.

You really think it could be lack of nutrients causing this kind of thing? That would surprise me, but I do want them to finish out well atleast even if yield is reduced.

 

[yourtreeshugger]

Also noticed these leaves are cupping pretty hard too. This is the plant with the excessively brittle leaves.

 

[Fish scale]

They look fine to me, other than the fact they are slightly overfed. But only ever so sightly overfed. You can tell by the leaf tips that they are slightly overfed. And it looks like they might have a slight nitrogen toxicity problem going on

 

[Fish scale]

Also noticed these leaves are cupping pretty hard too. This is the plant with the excessively brittle leaves.

What are your temps?

 

[yourtreeshugger]

Temps are pretty solid staying between 68-75f though humidity has been hard to keep above 30-40% being in the mountains of CO.

 

[Fish scale]

Temps are pretty solid staying between 68-75f though humidity has been hard to keep above 30-40% being in the mountains of CO.

68f is pretty cold. It looks like the leaves are cupping due to your temps being too high but since you said your temp is 68f which is low then I have no idea what is causing them to taco like that

 

[yourtreeshugger]

They look fine to me, other than the fact they are slightly overfed. But only ever so sightly overfed. You can tell by the leaf tips that they are slightly overfed. And it looks like they might have a slight nitrogen toxicity problem going on

I thought they looked overfed as well, with the burnt tips, brittle leaves and dead spots.. But I'm worried to give any more top dressings or teas with the issues going on. I did give a small dose of 4-9-4 tea a couple days ago to see if that would help, but so far not much.. maybe even made it worse.
Also I do not really water to runoff so I wonder about my well water building salts in the soil and causing toxicity, my well water comes in around 250tds... Not great but not terrible so I didn't think it'd be an issue but maybe?

 

[yourtreeshugger]

Yeah the highest it ever gets is 78 and that's when the sun is shining into the room through the window lol... It's cold up here in the mountains.

 

[yourtreeshugger]

Also it seems like the cupping only occurs on the leaves that are browning/dying

 

[mandocat]

Your plants look fine to me! Just normal senescence occurring. Cannabis is an annual and yours is nearing the end of its life. I grow in living soil, indoors and out and mine often look like crap by the time I harvest them, but the flowers turn out fine!