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[poersonandre]

Hi, first time grower here, i bought a super soil mix, filled the bottom 1/3 with it, filled the rest with perlite coco coir and some dirt with hummus. I believe my pH is too high, my reader seems to indicate 8 pH, I've already bought pH down and am waiting for it to arrive, regardless I'd like to confirm if (aside from pH) it looks like potassium or maybe boron defficiency? I initially thought caterpillars but its quite an isolated enviroment and there are these yellow/orange parts in the edge of some leaves. Also, do my leaves seem heat stressed, maybe too dark aswell? I've maintained temps between 26-29 °C like 80% of the time but it has reached some very high 32-35 temps for like 4-6 hours at a time sometimes. My super soil mix has kelp and sillica. thanks in advance guys, sorry for so many questions.

240W light 57 Liter pot strain nicole kush 2.0 from seeds genetics keeping the lights at around 40 cm distance, manufacturer says to keep at 30.

(pic showing "holes" in new and old leaves, with some showing yellowing around edge of holes)

[Bluey]

Top soil

[Rickster]

What soil to use

[Smallgrow]

Thanks
that makes sense.

[Smallgrow]

Thanks for the thoughts.
you’re probably right with your thinking. I haven’t grow these before so I have no comparison.
I don’t really see the blue tinge but I get what you’re saying about it.
I'm pulling the light back trying to get the temp and humidity back on point. I already top dressed flower nutes a couple days ago so I guess that could also be playing in, although two days is too fast for dry amendments to break down I suppose could still be reacting. Anyway, its done, with living soil you’re kinda committed. I defoliated significantly today hopefully that wasn’t a mistake. Life was forcing my growing schedule

[Rootsruler]

Tacoing usually means too bright a light. High light energy will increase the photosynthetic process speeding up nutrient uptake. There's where your deficiency came from. Looks like cal/mag deficiency.

[Bluey]

I'll give it a go.

Tips on developed leaves under new growth have that bluish tinge and it progresses back from the tip into the leaf and I associate that with high levels of N prior to twisting occurring. Its happened to me a few times especially evident in my OZ x SD, an amazing strain bred by Franklin. It's sometimes hard to show it in pics but I think I can see it. Can you see what I mean?

New growth at buds seems to be very early days & ok but high N could be slowing growth there and/or giving it a bit of a weird look? Is the growth at the buds slower than when you've grown these before or looking a bit weirder?

There appears to be a cal deficiency and mag also showing up on a leaf or two in the earlier pics mid growth but doesn't appear to be much. Normally a bit low pH or too much potassium. This is when it starts to show in my sativas around week 4 from flip but I grow in coco. I also think intense LEDs can bring this on more in some strains than others.

I'd try and get the RH down as it's probably pushing a low VPD and not taking up what it needs in the quantities to stay healthy as it can. If your giving it any liquid nutes I'm not sure what approach exactly to take given its in soil and you'd hope N would be low now but who knows.

I think the edges of the leaf starting to curl up a fraction is also related to the blue tinge I see but t here is lots of things that can cause that inc nute burn but not seeing much of that elsewhere really.

Edit. You could try a high pH flush and suppliment with a little bloom suppliments. That would be my approach if things dont pick up soon or you think it is too high N.

[Smallgrow]

Got a bit of a deficiency, any thoughts from people would be appreciated.

These are two different Autos , pics are a bit mixed up but looks the same to me on both plants. Discoloured Leaves are mid plant and some lowers are falling off, about 3 weeks into flower

Everything is pretty standard in the environment 77-78 F humidity is abit high, up to 75 but average about 65 I don’t think that’s it, I will be bringing it down for sure

I’m in living soil I forgot to check the soil PH but it’s always 6.6-6.8

I always have that bit of tip burn , and slight taco. not sure that’s the same issue.

thanks in advance

[Bluey]

Looks like quite bad burn to me. Look at those keaf tips.

What dies the diagnose your problem pages say about leaves like that?

[Yaboty]

Dont think its still recovering xause its getting worse and this one wasnt even really harmed by the neem, she was one of the least sprayed

I have 5 plants and only this one is doing this

[Bluey]

Or is it still recovering from the neem oil drench?

[Yaboty]

If yes, what to do? I can try anything at this point

[Rootsruler]

Potassium excess? Might be locking out.

[Yaboty]

Help

Top leaves turning rusty
1 month into flowering
Feeding phosphorus maximum dose day in day out every other day
discovered maybe ph high alkaline problem ( soil slur 8.2) so gave white vinegar solution 5.5 with my feed two days ago
still no recovery happening

[Bluey]

Ditto.. Don't use anything on flowers.

Having said that I can't see any flowers yet. She should recover so put her in to recovery mode by going conservative on light nutes and environment.