Ancient grower, forever learning. Diagnosis please.

[Galgrows]

Dang that little one brings me backView attachment 2524827
Little Allie, long gone, but not forgotten

I had a brother & sister chi for over 16yrs they were special.

 

[Florida_Mike]

I apologize for my reaction and especially the tone of it. I would gladly put your suggestions into practice. Blinders off, claws retracted. When time permits, please. I'm retired, I can wait. I'll put a face to the name, two faces.

Oh, welcome to the farm from another oldster! Man oh man, I remember some Gainesville Green that was the bomb. We usually called it crippy (kryptonite - the shit that killed Superman), Or Christmas Pot bc it usually came around x-mas time... Brings back some fond memories of New Smyrna Beach living in the 80's & 90's.

I grow in rockwool, but concur with the others, that mixing the two mediums is the underlying cause of your problems. This come purely from study here on the farm and backed up by AI:

• Different pH Ranges
  • Coco prefers a hydroponic pH: 5.7–6.2
  • Soil prefers a soil pH: 6.2–6.8
  • Mixing them makes it harder to maintain a stable root-zone pH because they pull in different directions.
• Different Feeding Styles
  • Coco is inert: It has no nutrients of its own, so you feed light, frequent nutrient solutions (like hydroponics).
  • Soil already has organic nutrients and microbes that release slowly. Adding coco dilutes the soil’s nutrient content, so you might underfeed or overfeed without realizing it.
• Water Holding vs. Drainage
  • Coco drains fast but holds oxygen well.
  • Soil holds water longer.
  • A 60/40 mix can create “wet pockets” where roots might get too much water or too little air if watering habits aren’t adjusted.

 

[Bigalmoby]

Welcome to the farm fellow bald and gray I’m part of the old people now OMG

 

[Wacahoota_Road]

Oh, welcome to the farm from another oldster! Man oh man, I remember some Gainesville Green that was the bomb. We usually called it crippy (kryptonite - the shit that killed Superman), Or Christmas Pot bc it usually came around x-mas time... Brings back some fond memories of New Smyrna Beach living in the 80's & 90's.

I grow in rockwool, but concur with the others, that mixing the two mediums is the underlying cause of your problems. This come purely from study here on the farm and backed up by AI:

• Different pH Ranges
  • Coco prefers a hydroponic pH: 5.7–6.2
  • Soil prefers a soil pH: 6.2–6.8
  • Mixing them makes it harder to maintain a stable root-zone pH because they pull in different directions.
• Different Feeding Styles
  • Coco is inert: It has no nutrients of its own, so you feed light, frequent nutrient solutions (like hydroponics).

• • Soil already has organic nutrients and microbes that release slowly. Adding coco dilutes the soil’s nutrient content, so you might underfeed or overfeed without realizing it.
• Water Holding vs. Drainage
  • Coco drains fast but holds oxygen well.
  • Soil holds water longer.
  • A 60/40 mix can create “wet pockets” where roots might get too much water or too little air if watering habits aren’t adjusted.

Oh, welcome to the farm from another oldster! Man oh man, I remember some Gainesville Green that was the bomb. We usually called it crippy (kryptonite - the shit that killed Superman), Or Christmas Pot bc it usually came around x-mas time... Brings back some fond memories of New Smyrna Beach living in the 80's & 90's.

I grow in rockwool, but concur with the others, that mixing the two mediums is the underlying cause of your problems. This come purely from study here on the farm and backed up by AI:

• Different pH Ranges
  • Coco prefers a hydroponic pH: 5.7–6.2
  • Soil prefers a soil pH: 6.2–6.8
  • Mixing them makes it harder to maintain a stable root-zone pH because they pull in different directions.
• Different Feeding Styles
  • Coco is inert: It has no nutrients of its own, so you feed light, frequent nutrient solutions (like hydroponics).
  • Soil already has organic nutrients and microbes that release slowly. Adding coco dilutes the soil’s nutrient content, so you might underfeed or overfeed without realizing it.
• Water Holding vs. Drainage
  • Coco drains fast but holds oxygen well.
  • Soil holds water longer.
  • A 60/40 mix can create “wet pockets” where roots might get too much water or too little air if watering habits aren’t adjusted.

Thank you, Timmy and I have been together 10 years. A friend found him abandoned near Watermelon Pond in Archer. He's a treasure.
I worked at the local headshop in the late 60s early 70's. Do you remember..

 

[Florida_Mike]

I moved to FL in 84, so I missed the earlier happenings. I've been to the Gator Nats about a dozen times over the years. Definitely got some Gainsville Green whenever I could.

You were a strapping young man... Wtf happened? Haha jk; great pics!

 

[Wacahoota_Road]

Welcome, fellow old fart! Some beautiful plants there... You didn't happen to get some water on the leaves while they were under lights, did you? Kind of looks like something that benign to me but if you're seeing it progressing you might just check that your soil pH isn't sitting too high. But to me it has that look of some condensation that got burnt off or something.

No don't think so but I'll check for condensation as soon as the lights come on. The strangest part of the whole scenario is the near identical occurrance of chlorosis location. Same lobes, same curling, same extent of damage on tbe lobes. The 4 photos are from 2 different girls. Even stranger, these were clones that had to revege and have different asymmetrical stem assemblages. Yet the damage is nearly identical. By the way the lights are 18 inches away and only running at 60%. Mars Hydro FC4000 Evos.
Here are 2 others growing along side the affected 2. They have not shown any similar problems.
.....yet.

 

[Wacahoota_Road]

I moved to FL in 84, so I missed the earlier happenings. I've been to the Gator Nats about a dozen times over the years. Definitely got some Gainsville Green whenever I could.

You were a strapping young man... Wtf happened? Haha jk; great pics!

The difference? 25 then, 80 in a few months.
Good term "strapping", indeed.

 

[JIMKSI64]

One of the common occurrences that I have read in diaries with this mix is the sporadic and weird focused growth. Even in the same pot part of the plant seems fine and part of it or a whole stem run seems to be affected.
No documentation of why but in my own soil post mortem inspections I found out that if your soil is not a good mix with very little density changes from different components the plants did well and the 2 I had trouble with I honestly did a shit job of mixing the soil and perlite. Big ball of fluffy white in one corner and an obvious ball of ocean forest that drew roots like crazy. This turned my pot into zones of different water load and nutrition. I can imagine in a soil and perlite/coco mix this would be even worse.

 

[carlosescobar]

What I told you isn't a guess.

Even if you're using 2 different mixes both being amended coco, your leaf issues are exactly what I said. Your roots are struggling, causing pH shift and those leaves you posted show classic wet feet issues. Its a sign that things are not really going all that well. I'd take a good solid look at your watering practices and/or your home mixed soil blend. You can fix this if you're open to suggestions.

I agree with that , i had the brilliant idea of mixing soil and coco late last year early this year and it was a disaster, roots too fine because of the wet feet, and i think what happened is the salts /nutrients built up and i lost 2 grows right at the end. drying, leaves curling up, and then locking out.. they were autos as well so they were a bit sensitive.
Ive moved to plain old soil (with amendments and rabbit droppings) and photoperiod seeds and the difference is amazing, i havent even had so much as any tip burn.

 

[carlosescobar]

I just found this which covers your problem i think
www.cannabisbusinesstimes.com/columns/cultivation-matters/news/15750558/feel-the-cannabis-leaf-margin-burn