CA def?
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can anyone tell me what this is? PLEASE HELP
LED 900W, 2 plants.
82F
45% RH
FFOF
Just fed cal/mag 10 days ago.
Plants are about month-month and a half old. Both are showing these signs. Help? Looks like Ca def?
Is it an excess amount of Ca or does it NEED Ca?
Both seemed to slow down in growth quite a bit..
LED 900W, 2 plants.
82F
45% RH
FFOF
Just fed cal/mag 10 days ago.
Plants are about month-month and a half old. Both are showing these signs. Help? Looks like Ca def?
Is it an excess amount of Ca or does it NEED Ca?
Both seemed to slow down in growth quite a bit..
Meta tron
New Member
Re: can anyone tell me what this is? PLEASE HELP
Nute Burn! that's the first sign. do a flush with ph'd water and check the ppm's and Ph of the run off, low ph could signify the over abundance of food, along with a high ppm.
Nute Burn! that's the first sign. do a flush with ph'd water and check the ppm's and Ph of the run off, low ph could signify the over abundance of food, along with a high ppm.
Re: can anyone tell me what this is? PLEASE HELP
It does look like a CA issue. How's your PH?
It does look like a CA issue. How's your PH?
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Meta tron
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Re: can anyone tell me what this is? PLEASE HELP
PH is fine, EC is high, burn can take a while but the crunchy brown tips are the first sign.
Give your plants a good flush, then wait a week before feeding them, those burnt tips won't go away, so once your nutes are under control you may consider trimming them off.
PH is fine, EC is high, burn can take a while but the crunchy brown tips are the first sign.
Give your plants a good flush, then wait a week before feeding them, those burnt tips won't go away, so once your nutes are under control you may consider trimming them off.
Re: can anyone tell me what this is? PLEASE HELP
Have you noticed in the nutrient availability charts that Ca is way out of range at 6.1?
https://www.420magazine.com/gallery/data/500/pH_chart712.jpg
Have you noticed in the nutrient availability charts that Ca is way out of range at 6.1?
https://www.420magazine.com/gallery/data/500/pH_chart712.jpg
Meta tron
New Member
Re: can anyone tell me what this is? PLEASE HELP
Yes I have been looking at them for the better part of 18 years, and there is a lot of similar looking things on the chart but he does not have a deficiency he has nute burn, his PH is good, his soil is hot, his EC is high and he has burned tips.
And an over abundance of nutrients can cause the PH to drift low, if he ph's to correct the issue at hand things will be much worse in the long run, flush the soil with PH'd water wait a week then check again.
^^^^NUTE BURN^^^^
Yes I have been looking at them for the better part of 18 years, and there is a lot of similar looking things on the chart but he does not have a deficiency he has nute burn, his PH is good, his soil is hot, his EC is high and he has burned tips.
And an over abundance of nutrients can cause the PH to drift low, if he ph's to correct the issue at hand things will be much worse in the long run, flush the soil with PH'd water wait a week then check again.
^^^^NUTE BURN^^^^
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Thanks so much for your input brother! I flushed both my girls with water running at 6.4ph. Hopefully by friday they resume growth!!
ChanandlrBong
New Member
Re: can anyone tell me what this is? PLEASE HELP
post an update so we know if the flush worked
post an update so we know if the flush worked
Re: can anyone tell me what this is? PLEASE HELP
I will stand by and quietly and respectfully disagree. I see a Ca issue... most likely caused by PH. Seems like a good plan would be to correct the PH issue anyway.... what can it hurt?
I will stand by and quietly and respectfully disagree. I see a Ca issue... most likely caused by PH. Seems like a good plan would be to correct the PH issue anyway.... what can it hurt?
This isn't a Calcium deficiency. Deficiency means not enough. Toxicity would mean too much.
This seems to resemble a potassium deficiency.
BUT...
Do NOT add nutrients until you check your PH with a reliable, calibrated meter.
This seems to resemble a potassium deficiency.
BUT...
Do NOT add nutrients until you check your PH with a reliable, calibrated meter.
Re: can anyone tell me what this is? PLEASE HELP
Fun. I posted my reply in your other topic. Please only post once per topic, it gets confusing trying to follow them for responses.
But again, this doesn't appear to be Calcium.
Fun. I posted my reply in your other topic. Please only post once per topic, it gets confusing trying to follow them for responses.
But again, this doesn't appear to be Calcium.
I think Ca could potentially be at risk for being deficient if the pH doesn't change, but right now I believe we are dealing with nute burn. Ca deficiency would be spottier on the fan leaves. example below.
Meta tron
New Member
Re: can anyone tell me what this is? PLEASE HELP
I respect you for doing that, but I will also point out the low PH is also a symptom of his problem, meaning an over abundance of nutes can cause the ph to drift, continuing to correct the PH only without flushing stands to only make more nutes available = more burn. If he doesn't flush till the runoff is clear the problem will persist.
Even if I am wrong flushing with PH'd water will help establish a balanced PH, lets not forget that chart is a good baseline, I have heard of people growing in a living Bokashi (fermented composted organic material) with a PH of 4... no kidding... How? I am not sure, all I know is that living soil has a mind of it's own and changes the game.
To me that availability chart is good for soilless mediums with chemical ferts, I do not believe FFOF is soilless and I have also heard more than one claim of burnt plants from it being to hot.
So add that with the burnt tips, low ph, and high EC, the math points to nute burn, not me, the math.
I respect you for doing that, but I will also point out the low PH is also a symptom of his problem, meaning an over abundance of nutes can cause the ph to drift, continuing to correct the PH only without flushing stands to only make more nutes available = more burn. If he doesn't flush till the runoff is clear the problem will persist.
Even if I am wrong flushing with PH'd water will help establish a balanced PH, lets not forget that chart is a good baseline, I have heard of people growing in a living Bokashi (fermented composted organic material) with a PH of 4... no kidding... How? I am not sure, all I know is that living soil has a mind of it's own and changes the game.
To me that availability chart is good for soilless mediums with chemical ferts, I do not believe FFOF is soilless and I have also heard more than one claim of burnt plants from it being to hot.
So add that with the burnt tips, low ph, and high EC, the math points to nute burn, not me, the math.
I hear ya... adjusting the ph will solve issues either way.
I'm still voting Ca tho. I notice his shots were from the mid point of the plant.... another pointer for Ca's favor. I saw one or two upper leaves that did not show the damage. Plus, just because some of the spotting was on the tips, the leaves were not curled or clawed. When I first looked at the spots, they screamed Ca to me.
Everyone has a different set of experiences and opinions. Mine are no more valid than anyone else's. I like that about this place. I learn from all exchanges no matter the flavor.
I'm still voting Ca tho. I notice his shots were from the mid point of the plant.... another pointer for Ca's favor. I saw one or two upper leaves that did not show the damage. Plus, just because some of the spotting was on the tips, the leaves were not curled or clawed. When I first looked at the spots, they screamed Ca to me.
Everyone has a different set of experiences and opinions. Mine are no more valid than anyone else's. I like that about this place. I learn from all exchanges no matter the flavor.
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Thank you all for your input, but growth has resumed, and 0 sign of any def or toxicity, new growth has begun forming with 0 discrepancies. Thank you all again! And sorry for double posting.
Meta tron
New Member
Re: can anyone tell me what this is? PLEASE HELP
IMO his PH is not WAY out of range, maybe a tenth low, 6.2 is fine he is at 6.1.
I am not sure how you can tell that the picture is taken mid way up the plant I can't even see the whole plant, what I can see is nute burn on every little tip in the pictures, even in the back ground little brown tips on the serrations.
Ca def looks a lot different. and besides FFOF should have enough Ca for the length of time he has been growing and he has supplemented with it as well so I have a hard time believing this would be CA def in the face of the overwhelming evidence of nute burn.
IMO his PH is not WAY out of range, maybe a tenth low, 6.2 is fine he is at 6.1.
I am not sure how you can tell that the picture is taken mid way up the plant I can't even see the whole plant, what I can see is nute burn on every little tip in the pictures, even in the back ground little brown tips on the serrations.
Ca def looks a lot different. and besides FFOF should have enough Ca for the length of time he has been growing and he has supplemented with it as well so I have a hard time believing this would be CA def in the face of the overwhelming evidence of nute burn.
Not way out no... but at the recommended 6.4/6.5 for soil, you're just touching the Ca absorption range. I assumed that was why many growers supplement with CalMag. At 6.1, you're way outside the absorption range.
I'm not familiar with using FFOF. Am I missing something?
I'm not familiar with using FFOF. Am I missing something?
