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Is this normal, or what?

  • Thread starter Thread starter Weedly
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Is this normal, or what?

Weedly 54 Replies 4,161 Views
Page 2 of 3 · Replies 21–40 of 55
#21
As for the damage on the leaves Im honestly not sure what it could be... maybe the fluctuations in ph? Im not very experienced with coco so maybe someone else knows why this happened. Im a peat grower. As long as it doesnt progress much it should be fine. I dont know if this is good advice because again, I dont grow in coco, but I know many coco growers that when they dont know what is going on just flush the medium and introduce nutes at half dose at the desired ph. For soil growers we dont flush unless its really necessary but for coco should be fine. Again, its better if you wait for someone with more experience in coco. If it doesnt progress should be fine until you harvest. A few yellowed fan leaves are not a problem once youre in mid-late flower.
 
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#22
Eledin said:
Are the upper tips affected in particuler while the rest of the nodes seem to be better or with no yellow tips? If so the light was too close.
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The yellow tips seem to be on the leaves mid-level in the canopy, while the damaged leaves are up pretty high. I included the light in this photo:
20250214 010821899 iOS


The worst damaged leaves are about 15" from the light now, but they were closer and the light was at 100% (Spider Farmer SF1000). Also, and I'm not sure how I've not realized this, I had added a third light to the tent a few weeks ago. Everything was going great for a couple weeks, so I didn't think much of it. I have since moved it away from the sick plant, so now only the one light is hitting it. I found a page with pictures and descriptions of every cannabis malady on GWE and the only ones that seem to match are calcium deficiency or phosphorus deficiency, but with phosphorus she says the problem usually starts down low on the plant. So from what everyone is saying and from what I've studied, it seems this must be a calcium issue, right? And since calcium seems to affect the way a plant handles light, the fact I had the lights too bright for it really exasperated the problem? The question now is, how do I fix it? I've turned down the lights and moved them away, but what about the calcium and ph management?
 
#23
Weedly said:
The yellow tips seem to be on the leaves mid-level in the canopy, while the damaged leaves are up pretty high. I included the light in this photo:
View attachment 2376915

The worst damaged leaves are about 15" from the light now, but they were closer and the light was at 100% (Spider Farmer SF1000). Also, and I'm not sure how I've not realized this, I had added a third light to the tent a few weeks ago. Everything was going great for a couple weeks, so I didn't think much of it. I have since moved it away from the sick plant, so now only the one light is hitting it. I found a page with pictures and descriptions of every cannabis malady on GWE and the only ones that seem to match are calcium deficiency or phosphorus deficiency, but with phosphorus she says the problem usually starts down low on the plant. So from what everyone is saying and from what I've studied, it seems this must be a calcium issue, right? And since calcium seems to affect the way a plant handles light, the fact I had the lights too bright for it really exasperated the problem? The question now is, how do I fix it? I've turned down the lights and moved them away, but what about the calcium and ph management?
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About the PH I would say try to keep it stable and between the ranges you should for coco (seems like you were withing the range but you kept swaping from lower to upper side of that range, that could have caused problems).
If the lights were contributing to the yellowing (which in my case iit has happened many times, specially when I dont dimm enough mi lights for young plants so just by moving the light should be solved. I dont know if I would flush to make sure I only have everything thats needed in the good ratios but if you think you already have them then there's just waiting, or hoping that someone recognizes what happened to you in particular.
 
#24
I would say its a mix if ph fluctuations and some light stress. Thats not a definitive diagnosis because many things look very similar but if I had to bet I would bet its that. Looks like 100% some nute problems but I dont think its because of what and how you used it but rather the different absorption ratios for different minerals changing during the grow. I know that coco is way worse when you dont have everything dialed in, it will very fast start showing yellows and spots and whatnot and you will never know whats fucked because everything is fucked 🤣
 
#25
Correct me if Im wrong but 6,4 ph in coco woudlnt be considered too high too? I know it was only temporarily but it has been changing a lot right? Even if the change wasnt that big all the times.
 
#26
Most if not all companies base their recommended doses with RO filtered water. And if we're using hard well water here, Your not mixing per recommended values. Because your EC/PPM (from the well water) is already up there from the get go. With RO water, your EC/PPM is near 0. When you measure out whatever PPM your aiming at... YOUR GETTING IT. Hard to say what your getting with tap/Well water.
 
#27
Week4Bytch said:
Most if not all companies base their recommended doses with RO filtered water. And if we're using hard well water here, Your not mixing per recommended values. Because your EC/PPM (from the well water) is already up there from the get go. With RO water, your EC/PPM is near 0. When you measure out whatever PPM your aiming at... YOUR GETTING IT. Hard to say what your getting with tap/Well water.
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They have a hard water version but if he doesnt know what he has its probably the soft water version which would be good in his case as well water comes with a fair ammount of ppm, mostly minerals.
 
#29
Eledin said:
Correct me if Im wrong but 6,4 ph in coco woudlnt be considered too high too? I know it was only temporarily but it has been changing a lot right? Even if the change wasnt that big all the times.
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Everything I read, including the feeding chart I was using, said to keep ph between 5.5 and 6.5 for coco so I was letting it drift up and down. This may have bit me in the ass a little. I'm getting ready to feed now and I'll go back to 6.0 ph and lower the nutes some.
Week4Bytch said:
Most if not all companies base their recommended doses with RO filtered water. And if we're using hard well water here, Your not mixing per recommended values. Because your EC/PPM (from the well water) is already up there from the get go. With RO water, your EC/PPM is near 0. When you measure out whatever PPM your aiming at... YOUR GETTING IT. Hard to say what your getting with tap/Well water.
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TBH, when I got my pen I tested the EC of my feed and it seemed way high (+2,000), but the plants were doing great, so I just stuck to the chart. The first time I checked the runoff it was over 5,000, but the plants were thriving, so I just stopped measuring EC and kept to the chart. Maybe that's biting me in the ass a little too. I read somewhere that plants get a whole lot more finicky in flowering and near the end.
 
#31
Weedly said:
Everything I read, including the feeding chart I was using, said to keep ph between 5.5 and 6.5 for coco so I was letting it drift up and down. This may have bit me in the ass a little. I'm getting ready to feed now and I'll go back to 6.0 ph and lower the nutes some.

TBH, when I got my pen I tested the EC of my feed and it seemed way high (+2,000), but the plants were doing great, so I just stuck to the chart. The first time I checked the runoff it was over 5,000, but the plants were thriving, so I just stopped measuring EC and kept to the chart. Maybe that's biting me in the ass a little too. I read somewhere that plants get a whole lot more finicky in flowering and near the end.
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That they do.. And you don't want it that high near the end. Slamming your flower with the one thing your trying to get out during the dry/cure. Nitrogen/Chlorophyll
 
#32
Weedly said:
I'm using the General Hydroponics FloraTrio, which doesn't seem to have two versions. You'd think these guys could come up with names that don't sound like everybody else's.
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Oh theyre the same brand but theyre called Terra Aquatica in Europe. Maybe in the US version from GH they dont have for hard and soft water.
 
#33
Yup just searched for it, the US version doesnt have hard and soft water versions.
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#34
The formulas seem to be different aswell, but the pictures are the same. Name is not the same, ingredients are not the same but the bottles look the same hahaha. I think one of the partners that partially owns it decided to do its thing because the guy in the US wanted to change the formulas and he wanted to stick with the originals. Thats something I read, an internet, roumor no way of knowing if its true. Anyhow I noticed that your floramicro does contain calcium but not magnessium... the calmag should of course have magnessium but its weird that they didnt decide to add more, maybe it comes in another bottle, from micro or grow 🤷‍♂️
 
#35
It was so much easier when I could just stick to the GWE chart and the plants would grow exponentially. Now that there's an issue, I'm second guessing everything--which I know I shouldn't do. I just fed them with 2/3rd strength nutes at 6.15 ph to about 20% runoff. The feed water had an EC of 1,550 and the runoff was 3,300. Too high? Ph was 6.2.
It's interesting that the chart I'm using says I should have stopped giving CaliMagic a week ago, which implies the plant either has enough in it, or doesn't need it anymore. Neither seem true with my plant.
The sick plant is mine and I don't use much weed, so if I get a couple ounces, I'll be thrilled. The other plant is for a friend and it seems to be rolling right along.
 
#36
Or I should say, 2/3rd strength by the GWE chart, not the bottle. The GWE chart is pretty much half the strength on the bottle to start with.
 
#39
Grownsince95 said:
Exactly! I'm my experience Ca is usually abundant when feeding "by the book" but because the plant cannot move it around like other nutrients, it has to be available in the root zone every feeding. That's why cal/mag deficiencies show up at the top/new growth. Other movable nutrients get sucked up from older, lower leaves when the root zone stops providing them and start showing from the bottom usually.
So if you know you're feeding it enough calcium, environmental factors can get in the way of absorption. Also too much Potassium can block Calcium so that's why my first instinct was to lower the feed.
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magnesium is mobile like nitrogen and problems start in older leaves 1st. If calcium is very high in water supply and he is adding more it can be causing toxicity and lock out which mimics deficiency. It's my understanding that it (calcium) builds up quickly in soil and coco. He didn't mention his water source that I saw. I'm assuming it's just tap water. just my .02
 
#40
Forgot to mention that if it's just one plant, it could just be
a sissy that is very sensitive to ph and nute fluctuations.
 
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