Calcium or Magnesium issue? (I'm guessing both?)

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Beachwalker

Well-Known Member
hotrodharley said:
https://www.autoflower.net/index.php/2016/11/16/flushing-the-myth-that-will-not-die-by-pop22/

Read and see. Flushing does not work. This article is very informative .
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Also I glanced at your article I'm not sure if you're talking about flushing before Harvest which if you are I don't do that either because it doesn't work, but not applicable here

however in this case I think he needs to clean the shit out of that plant, and good!

and start fresh get that soil as cleaned out as much as he can get it, and start with balanced nutrients is what I'm recommending
 
hotrodharley

hotrodharley

Well-Known Member
Beachwalker said:
Also I glanced at your article I'm not sure if you're talking about flushing before Harvest which if you are I don't do that either because it doesn't work, but not applicable here

however in this case I think he needs to clean the shit out of that plant, and good!

and start fresh get that soil is cleaned out as much as he can get it, and start with balanced nutrients is what I'm recommending
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Talking about absorption and uptake. Of water and nutrients. Of the uselessness of flushing. From the article:

"Counterintuitively, water and nutrients do not enter together with the ions that are dissolved in water. That’s an important point to remember. They enter separately. The second point to remember is that plants do not use nutrients in their organic form. They cannot use nutrients until they have been broken down into their inorganic form. We will get into that later in the book, just note it for now."

In short it ain't gonna happen. It ain't gonna help.
 
H_Aspect

H_Aspect

Active Member
hotrodharley said:
Just water if you suspect too much of something .
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Ok, last stupid question, I promise. When I foliar feed later, do the lights matter (they are on 24/7 at the moment since they are autos not in flower) and can I mix the salt in regular tap water? I have one gallon of distilled left if that's better.
 
hotrodharley

hotrodharley

Well-Known Member
H_Aspect said:
Ok, last stupid question, I promise. When I foliar feed later, do the lights matter (they are on 24/7 at the moment since they are autos not in flower) and can I mix the salt in regular tap water? I have one gallon of distilled left if that's better.
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Feed at lights on. Tap is fine.
 
U

upnsmoke13

Well-Known Member
How much salt/gallon please? Report on the recovery of effected leaves ( ie, if leave tissue returns to healthy green or effected areas shrivel & brown). Thank you
I have very similar leaves, from a weak start.
 
H_Aspect

H_Aspect

Active Member
upnsmoke13 said:
How much salt/gallon please? Report on the recovery of effected leaves ( ie, if leave tissue returns to healthy green or effected areas shrivel & brown). Thank you
I have very similar leaves, from a weak start.
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Will do. I used 1 tablespoon/gallon. I'm not under any impression the worst of the leaves will recover, but I'm hoping the newer growth that is just slightly showing those signs, and the even smaller growth just coming through, will all be fine.

According to both the "lift test" and my Luster Leaf moisture meter I'm going to water them tomorrow and add in some Cal Mag as well.
 
C

CannaCountry

Well-Known Member
Let us know how things turn out.

FYI, you could give your electricity bill a small break by running 18/6 or 20/4. Regardless if the lights are on all the time or not, your plant is going to rest. You may as well rest your electricity bill too. Good luck.
 
H_Aspect

H_Aspect

Active Member
CannaCountry said:
Let us know how things turn out.

FYI, you could give your electricity bill a small break by running 18/6 or 20/4. Regardless if the lights are on all the time or not, your plant is going to rest. You may as well rest your electricity bill too. Good luck.
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Yeah, I guess I could do 20/4 and not really do much harm or good, huh? The lights are 395w (actual) running 24/7 and I pay .13 cents a KW. According to my shitty math (ok, an online calculator) it's $36/month for 24/7 and $30/month for 20/4.

Royal Queen Seeds posted the following in a blog, which is why I was doing 24/7. (But it also made the argument for 18/6 and 20/4 based on heat & electricity issues)

As autoflowering plants do not rely on hours of light to tell them when to flower, they can be subjected to a 24- hours of light throughout their growth cycle. In fact, many growers believe 24 hours of light is crucial when growing autoflowering plants, as it may give them the best chance to grow bigger in the vegetative stage and then eventually flower accordingly.

Cannabis is classed as a C3 plant, meaning it can absorb CO₂ during periods of light for photosynthesis. This theoretically eliminates the need for darkness, as they do not need periods of dark to photosynthesis, unlike C4 plants. Autoflowering plants have also evolved in the northern areas of the world where they receive near to 24-hours of light as standard during the seasons of growth. As such, it is safe to say that autoflowering cannabis can thrive under 24-hours of lighting.
 
C

CannaCountry

Well-Known Member
H_Aspect said:
Yeah, I guess I could do 20/4 and not really do much harm or good, huh? The lights are 395w (actual) running 24/7 and I pay .13 cents a KW. According to my shitty math (ok, an online calculator) it's $36/month for 24/7 and $30/month for 20/4.

Royal Queen Seeds posted the following in a blog, which is why I was doing 24/7. (But it also made the argument for 18/6 and 20/4 based on heat & electricity issues)

As autoflowering plants do not rely on hours of light to tell them when to flower, they can be subjected to a 24- hours of light throughout their growth cycle. In fact, many growers believe 24 hours of light is crucial when growing autoflowering plants, as it may give them the best chance to grow bigger in the vegetative stage and then eventually flower accordingly.

Cannabis is classed as a C3 plant, meaning it can absorb CO₂ during periods of light for photosynthesis. This theoretically eliminates the need for darkness, as they do not need periods of dark to photosynthesis, unlike C4 plants. Autoflowering plants have also evolved in the northern areas of the world where they receive near to 24-hours of light as standard during the seasons of growth. As such, it is safe to say that autoflowering cannabis can thrive under 24-hours of lighting.
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Interesting take; thank you.
 
H_Aspect

H_Aspect

Active Member
vtim802 said:
So what happened to the plants? i am having the same type of defiency thing, check it out i cant get a response
https://www.rollitup.org/t/leaves-looking-wavy.977874/
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Hmmm.. that's awful small. I don't know if you could make the assessment of anything definitively at that stage - but if so, it wouldn't be by me.

However, as to my situation, here is an update.

  • Two plants are night and day. 100% recovered. The next two nodes that grew appear perfect with zero spots or any deformities.
  • Two others show improvement for sure - we'll say 50+% better. The next two nodes that grew all have tiny yellowing at the tips and one or two small spots.
  • Third plant shows no improvement, but it's the runt of the litter (shell had to be "helped off") and is about 4.5" where the others are 7"+ now. It's growing deformed anyway, so I don't think anything would have helped it, but we'll see.
But if your plant still only has a node or two, I wouldn't foliar feed until a more experienced grower has diagnosed your problem.
 
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