Coco grow: Twisted leaves and brown between veins

beepy1

Member
I am in day 45 of flower, and am growing in coco under an LED. I gave my plant nutrient burn about 5 weeks ago, but since then I have not given more than 400ppm of nutrients. I ph to 5.8 and water every 24-48 hours to runoff. There is only one top cola that has the browning between veins, and I would like to prevent the same symptom from spreading. Many sugar leaves are twisted but otherwise appear healthy. What should I do to prevent further damage? Most leaves seem fine, and only 10% are twisted. I am a first time grower so I would appreciate any advice and i would also like to learn what is causing the browning and the twisting/wavyness of leaves.
 

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Blitz35

Well-Known Member
You may not get many replies...grow looks fine..plants seem very healthy! You may have had a slight abundance based on the burnt tips, and 'possibly' a touch high on nitrogen for this time, but in my opinion, you seem to be doing just fine.
The brown patches, because if anything, i think you are on the higher end of nutes, can be an excess of manganese....only other symptom would be a lack of boron, but since all else looks good and slightly high if anything..i'll say perhaps manganese is in excess, or was at some point.
 

pinner420

Well-Known Member
Coco is hydrophilic so as a going concern dial back to 1.2 ec and proceed as planned. 10% or so runoff daily... your watering in a hydrophobic wet dry pattern bad for coco..... frequency 1 or 2 times daily..

Peace...
 

beepy1

Member
Coco is hydrophilic so as a going concern dial back to 1.2 ec and proceed as planned. 10% or so runoff daily... your watering in a hydrophobic wet dry pattern bad for coco..... frequency 1 or 2 times daily..

Peace...
I have been using 0.8 ec (400ppm), so I'm not sure what you mean. I would like to know if this is a deficiency or a toxicity of some kind. I will make sure the coco does not dry out between waterings. I'm still confused by the brown patches and the twisted leaves, as I haven't really let the coco dry out before.
 

pinner420

Well-Known Member
Get to feeding them they are hungry.. what nutrient regimen are you rollin? Ran a CBS strain awhile ago Sweet Black Angel. A friend gave it to me. Only when he fed her ionic nutrients would she not show the issue your witnessing. He said the same thing Manganese...
 

Blitz35

Well-Known Member
Get to feeding them they are hungry.. what nutrient regimen are you rollin? Ran a CBS strain awhile ago Sweet Black Angel. A friend gave it to me. Only when he fed her ionic nutrients would she not show the issue your witnessing. He said the same thing Manganese...
Care to elaborate? What exactly is an 'ionic' nutrient???
 

beepy1

Member
Get to feeding them they are hungry.. what nutrient regimen are you rollin? Ran a CBS strain awhile ago Sweet Black Angel. A friend gave it to me. Only when he fed her ionic nutrients would she not show the issue your witnessing. He said the same thing Manganese...
I'm using GH Flora series, but just the 3 base nutrients in the lineup plus some Cal-mag.
 

pinner420

Well-Known Member
So after some time you'll come to find micro is calmag!! Ionic is a brand name..
Spoke with the head of autopot and he chooses to run. 6mil micro 3ml grow 9ml bloom ; as noted micro has like 5% calcuim which is a nice payload. So your manganese element resides in the micro bottle. Bump to 8mls till she planes out. That's my 2 cents my friend. Welcome to the journey!
 

Blitz35

Well-Known Member
micro is cal/mag??? There is absolutely no magnesium in the micro bottle..that and sulfur is in the bloom bottle! Bump up micro? The bottle highest in nitrogen, in mid-flower, and that's what he should bump up? The nitrogen? When he's already on the edge of too much lol? Oh, and the 'head' of autopot is using that formula? What a genius! It's the exact directions on the bottles! lol..1:2:3: ratio of grow-micro-bloom in flower..oh man..some of the 'advice' lol.
 

beepy1

Member
Bump up micro? The bottle highest in nitrogen, in mid-flower, and that's what he should bump up? The nitrogen? When he's already on the edge of too much lol?
How can you tell that my 400ppm is too much? Is it possible that I burned them much earlier in flower, and that now I'm low on nutrients? I'm just wondering since 400ppm seems low to me, especially since 100ppm of that is cal-mag (from GH CaliMagic). Last question I have for you is so you think my buds will get significantly larger and fuller in the next and final 20 days? They are looking kind of pathetic to me compared to other growers of this strain. Most of them are not putting out new white pistils/stigmas, although a few are.
 

Blitz35

Well-Known Member
How can you tell that my 400ppm is too much? Is it possible that I burned them much earlier in flower, and that now I'm low on nutrients? I'm just wondering since 400ppm seems low to me, especially since 100ppm of that is cal-mag (from GH CaliMagic). Last question I have for you is so you think my buds will get significantly larger and fuller in the next and final 20 days? They are looking kind of pathetic to me compared to other growers of this strain. Most of them are not putting out new white pistils/stigmas, although a few are.
Like i said, i don't see much wrong...she's growing nicely, frosting up...45 days in 12/12? so you're at the end of week 5 flower..at the mid mark..still will put on weight. What kind of led are you using?
The reason i said about the nitrogen, is you can see a couple of leaves have slight hooks at the tips...you also have darker leaves, at this point in flower..she's done her stretch, downhill from here to the end..she doesn't need that much nitrogen anymore, and too much of it at this time will slow flowering down! The leaves do seem to have a nice shine to them and turning frosty on the tops...that wouldn't happen if something was going too wrong :) I actually don't see the twisted growth you're referring to.
 

beepy1

Member
Like i said, i don't see much wrong...she's growing nicely, frosting up...45 days in 12/12? so you're at the end of week 5 flower..at the mid mark..still will put on weight. What kind of led are you using?
The reason i said about the nitrogen, is you can see a couple of leaves have slight hooks at the tips...you also have darker leaves, at this point in flower..she's done her stretch, downhill from here to the end..she doesn't need that much nitrogen anymore, and too much of it at this time will slow flowering down! The leaves do seem to have a nice shine to them and turning frosty on the tops...that wouldn't happen if something was going too wrong :) I actually don't see the twisted growth you're referring to.
I'm using a 500W "blurple" led and have added a 75W 3000K color temperature COB in one corner of the tent as a supplemental light and to see if it has any effect. I will try to reduce the nitrogen I am feeding, thank you for the advice. The twisting of the sugar leaves is hard to capture on camera, but in my second photo you should be able to see wavyness in a large fan leaf. I guess I will just have to wait the next 2 weeks to see if any buds fatten up, but I'm getting the feeling I may have a small yield coming my way since the buds are so small.
 

Blitz35

Well-Known Member
I'm using a 500W "blurple" led and have added a 75W 3000K color temperature COB in one corner of the tent as a supplemental light and to see if it has any effect. I will try to reduce the nitrogen I am feeding, thank you for the advice. The twisting of the sugar leaves is hard to capture on camera, but in my second photo you should be able to see wavyness in a large fan leaf. I guess I will just have to wait the next 2 weeks to see if any buds fatten up, but I'm getting the feeling I may have a small yield coming my way since the buds are so small.
'500 watt' blurple, means what..200 watts actual draw? In a space like yours, maybe 4x4?..4 plants? You'd need maybe 4 of these lights..one for each plant to get better yields. They are not that powerful, especially for flowering, and have a small footprint. Plants can only grow with the amount of light they have to photosynthesize...it's their only energy source. They use sunlight to turn hydrogen, oxygen, carbon, into glucose, and then use that glucose to form other sugars/energy sources for the plant ..without enough light, plants (fruits), stay smaller. As long as the plant(s) are healthy and growing with vibrant leaves, it's all you can do in terms of giving the best foot to grow on, but they still need the energy from a strong light to grow to their fullest.
I see the little wave in that leaf in the pic, but that's from too much nitrogen...that slight downward cupping of the leaf and extra dark green are the signs. There is twisted growth in grows...comes from a lack of zinc or boron, but you can clearly see the twists of new leaves on those plants...and new shoots just stop growing, twist/wrinkle/contort, you for sure don't have that!
 
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curious2garden

Well-Known Mod
Staff member
'500 watt' blurple, means what..200 watts actual draw? In a space like yours, maybe 4x4?..4 plants? You'd need maybe 4 of these lights..one for each plant to get better yields. They are not that powerful, especially for flowering, and have a small footprint. Plants can only grow with the amount of light they have to photosynthesize...it's their energy source to turn water into starch..without enough light, plants (fruits), stay smaller. As long as the plant(s) are healthy and growing with vibrant leaves, it's all you can do in terms of giving the best foot to grow on, but they still need the energy from a strong light to grow to their fullest.
I see the little wave in that leaf in the pic, but that's from too much nitrogen...that slight downward cupping of the leaf and extra dark green are the signs. There is twisted growth in grows...comes from a lack of zinc or boron, but you can clearly see the twists of new leaves on those plants...and new shoots just stop growing, twist/wrinkle/contort, you for sure don't have that!
^this

Nicely said
 

beepy1

Member
'500 watt' blurple, means what..200 watts actual draw? In a space like yours, maybe 4x4?..4 plants? You'd need maybe 4 of these lights..one for each plant to get better yields. They are not that powerful, especially for flowering, and have a small footprint. Plants can only grow with the amount of light they have to photosynthesize...it's their only energy source. They use sunlight to turn hydrogen, oxygen, carbon, into glucose, and then use that glucose to form other sugars/energy sources for the plant ..without enough light, plants (fruits), stay smaller. As long as the plant(s) are healthy and growing with vibrant leaves, it's all you can do in terms of giving the best foot to grow on, but they still need the energy from a strong light to grow to their fullest.
I see the little wave in that leaf in the pic, but that's from too much nitrogen...that slight downward cupping of the leaf and extra dark green are the signs. There is twisted growth in grows...comes from a lack of zinc or boron, but you can clearly see the twists of new leaves on those plants...and new shoots just stop growing, twist/wrinkle/contort, you for sure don't have that!
No, it is 520W draw from the wall. 600W actual draw if I include the COB. The strange thing to me is that the buds are just as big in the corners of the tent where the light is weakest. I would expect the centers to be getting more energy and growth, but that is not what I am seeing.
 

Blitz35

Well-Known Member
No, it is 520W draw from the wall. 600W actual draw if I include the COB. The strange thing to me is that the buds are just as big in the corners of the tent where the light is weakest. I would expect the centers to be getting more energy and growth, but that is not what I am seeing.
So you have a strong enough light then from the sound of it. Again, all ican go by is the way the plants look, and they look pretty much as healthy as can be, and if you have that kind of light over it, it'll do what it can. Be patient, once flowering slows down in about 2 weeks, they go through a short 'fattening' phase as well just before harvest. Don't compare your plants to someone else's..even if same strain, not all seeds come out the exact same way as another. I had 3 moneymaker plants last grow..all in same exact mixture, under same light, one got me just shy of 3 oz's..the one right next to it got me only 1.5 lol. As long as plants are healthy, and the end product is good, you did all you could.
 

wizard cabbage

Well-Known Member
I cut back on the micro And up the bloom the deeper I go into flower . I feed once a day 500 - 600 ppm I’m 2 weeks into flower . If your tips burn lower your ppm.
 
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