Would being thirsty cause the leaves to curl up like this?

[Creeperpark]

Yea people like myself overdo cal mag. in the past and it comes back and always bites me on the ass with leaf bronzing. I don't use it like I used to but you need a little if you are using RO or Rain mixed with fertilizer.

Growdo if you use a complete fertilizer, the plant will take what it needs if the pH is correct. If the plant is turning yellow at the top and you are using a complete fertilizer that means the pH is rising above the normal pH range and locking out micronutrients. Its not from lacking its from pH issues.

If you use an incomplete fertilizer you will have deficiencies with any pH.

 

[Growdo Baggins]

What time of day did you take the pics, how far into the light cycle?

The lights would've just come on within the past hour of the pics

 

[moses wellfleet]

The plants look very healthy to me, have you checked on them during the second half of the light cycle?

Ime checking on plants so soon after lights come on can be problematic because they take time to get going, turgidity does not suddenly return to the leaves.

 

[moses wellfleet]

Thank you for that information, I always appreciate your knowledge bro. You've been a great help to me and a lot of other I'm sure. This is my last grow in pots. I got a 2x4 grassroots fabric bed. KiS organics has this white paper on their site about beds vs container growing and beds def seem like the way to go. I made a "living soil" and am going to start that next run. I've been reading a lot and have gotten a ton of help from KiS. I got a soil test and amended based on that. With their guidance.

The plants seem to be better today. But the plant on the left is wilting and the right def has something going on, I'm going to go figure out. She's due for a flush. The other 2 got theirs.

View attachment 18819348

Left plant View attachment 18819349

Right plant View attachment 18819350

You say here they looked better, is this possibly later in the day?

 

[Growdo Baggins]

You say here they looked better, is this possibly later in the day?

It was the next day. The middle plant, which I had originally asked about the curling leaves was looking better. But then the one on the far left was wilting. I had flushed it a couple days before. It's due for a feeding tonight. I don't need to get run off when I'm feeding do I?

 

[Ca++]

Goodbye from Maximum Yield

In print and online, Maximum Yield is your source for cannabis and cultivation knowledge, with informative grow articles and tips to enhance your life with mmj.

www.maximumyield.com

Jennifer

Girl doesn't understand nutrient antagonism. So far removed from reality, she spends a good portion of her opening text, explaining that she doesn't know why calcium comes with magnesium, and looking for an alternative truth. This theme of not understanding lock-outs, runs right through the article.

If that's who I could find to agree with me, I think I might be wrong.


Just to clear this up, Ca is not taken in well by mid flower. Ca is loaded up in veg and transition. Signs of deficiency later on, are corrected in the next crop.

 

[Charles Dankens]

"With that said, almost every case in the Cannabis infirmary is a case of Calcium toxicity"

The Dunning–Kruger effect is a cognitive bias[2] whereby people with low ability, expertise, or experience regarding a certain type of task or area of knowledge tend to overestimate their ability or knowledge

 

[shishkaboy]

Growdo, you have the same problem every "forum informed" grower seems to have. There's this notion, that originated from grow forums, that Cannabis wants large amounts of Calcium. This idea comes from the fact that traditional crops struggle to uptake Calcium (while soaking up K like a sponge). Cannabis differs from other crops in that regard, its complete opposite.

Almost every time someone claims Calcium deficiency, its actually a Boron deficiency caused by excess calcium. Cannabis is a mutt plant; 30 seeds will show 30 different symptoms of the same exact problem. Ive taken the time to document them all. Most Boron deficiency symptoms look very similar to Calcium deficiency symptoms. When you also see signs of P deficit, (B supporting P uptake and Ca inhibiting P uptake), you have all the clues you need. Overly dark leaves/purple petioles: P deficiency , possibly through restricted Mg. Downward curl/hooked tips/interveinal necrosis: Boron deficiency. Usually you see tacoed or burnt margin with burnt tips, potassium deficiency, accompanying Calcium toxicity. That's not apparent in your grow. Diagnosis: Bor-pot + likely mag deficiency, as a result of excess Calcium. The lack of boron, magnesium and potassium will induce light/heat sensitivity. With that said, almost every case in the Cannabis infirmary is a case of Calcium toxicity.

I decided to find the bottom end of Calcium in Cannabis. About 2/3 a cup per cubic foot in a medium light base mix soil. This would eventually induce Calcium deficiency with distilled water irrigation. If you have any more calcium than that, say a cup per cubic ft of medium, you likely have enough. Too much and you'll end up with crusty leaves and subpar bud. Especially if your calcium source is calcium carbonate, as this allows trichomes to utilize carbonate for trichome wall structure instead of silica. This carbonate becomes active as trichomes swell, and has a neutralizing effect on cannabinoid/terpenoid acids.

When I began discussing this years ago, people laughed. Until one of the court jesters bought up all the Calcium silicate, and started a silica based product line which showed observable improvement in terpenoid content, as silica easily out competes carbonate when foliar applied. Then, they realized the Calcium was too much for Cannabis, as I had proclaimed from my podium of solitude. Good luck finding a fair price on potassium silicate since then. Most if not all of my post were removed by forum sponsors. This was considered the golden era of Cannabis forums, ha.

Soil carbonate will also tie up large portions of mineral nutrition, which is why hard water fertilizer lines contain a much higher NPK value than their soft water variant. Calcium carbonate has no place in Cannabis production. Neither does calcium nitrate but thats another story. Calcium in general, is almost always over applied in Cannabis. Good luck finding a fair price on silicate products of any type, as a hoarder level of greed and selfishness has taken over the cannabis supply line.

Goodbye from Maximum Yield

In print and online, Maximum Yield is your source for cannabis and cultivation knowledge, with informative grow articles and tips to enhance your life with mmj.

www.maximumyield.com

I'm glad one of my fellow ladies is finally going public with this info. There are people charging hundreds of dollars to tell you what I just revealed. People are probably laughing at Jennifer, but how can you argue with a Cannabis Cup winner who never worked for HighTimes? The jesters should smoke someone else's weed every once in a while, and stop being "self sufficient" aka ego preservationists. The era of mids is coming to an end. The hate for commercial Cannabis is slowly turning into pure jealousy. The only thing left for commercial operators to figure out at this point is the breeding. The reason commercial tomatoes taste bad is only partially due to poor fertilizer practice. The "breeding for looks" bug bit hard in Cannabis just as it did with tomato. Eventually people are going to want tomatoes that taste like tomatoes, and Cannabis that tastes better than anyone knew Cannabis could taste. The era is misinfo in Cannabis will be forced to a halt once some of the egos realize the missing quality of the past is not missing, its being actively R&D'ed in high end facilities that don't even sell or distribute CannabInter

Interesting article