Need help, leaves are pale, plants are not growing

[Robgrows]

I would suggest you repot into 1 medium whatever you choose. Shake off that stuff on the roots and repot. Just water lightly first time
regardless of medium. If you use coco I would feed half strength a couple of times and then increase if needed. If you use a good soil
that has some nutrients I would water at least 3 times before half strength nutes.

Sounds extreme but remember this is a weed. Maybe turn down the light a bit. It might take a few days or a week but the plants should bounce back and thrive.

Good luck and let us know how it works out.

 

[Robgrows]

Forgot to mention PH is way more important in coco. I haven't PH'd soil in years.

 

[Fotzenschlaeger]

I would suggest you repot into 1 medium whatever you choose. Shake off that stuff on the roots and repot. Just water lightly first time
regardless of medium. If you use coco I would feed half strength a couple of times and then increase if needed. If you use a good soil
that has some nutrients I would water at least 3 times before half strength nutes.

Sounds extreme but remember this is a weed. Maybe turn down the light a bit. It might take a few days or a week but the plants should bounce back and thrive.

Good luck and let us know how it works out.

Thanks, I was waiting for delivery of Ph reduction solutions and also CaliMag. I haven't used it because I thought that TA Tripart would be enough but obviously that CaliMag thingy is quite important. For roots booster it is too late I guess, they are about 5 weeks old. Also I stopped watering for few days because the pots are quite heavy but tomorrow I will give them some water. Also I need to recalibrate the Ph meter, just in case it was measuring wrong so I hope that they will recover. My very first autoflowers try was in similar situation like these feminized plants are and the repot helped so I will give it a shot. Anyway thanks for tips and I will let you guys know in few weeks how they are doing

 

[Robgrows]

You're welcome and good luck.

 

[Glomus]

Looks like either transplant shock or nutrient lock out. If your soil is good it should be fine, just let it adjust and don't over do anything. Not sure what kind of soil, but seems like it needs N

 

[Eledin]

Forgot to mention PH is way more important in coco. I haven't PH'd soil in years.

Soils for cannabis already come buffered at 6-6,5ph. Still if you use tap water and its very alkaline the buffers from your soil will change over time. I think it should be meassured at least the first time and every time you work with a new liquid or another type of water. If youre using RO water then its totally fine because it has a ph of 6,5. There's another instance in which I meassure it and its when I add acidic supplemets like big bug. Even with tap water that is above 8ph in my case, with some supplements Ive seen the water go to 5ph (and the droplets dont show less than 5 so who knows if less).

 

[Fotzenschlaeger]

Looks like either transplant shock or nutrient lock out. If your soil is good it should be fine, just let it adjust and don't over do anything. Not sure what kind of soil, but seems like it needs N

It's mix of coco coir/perlite, compost and worm castings. I wasn't using Calimag but I bought one few days ago so I hope it will help, otherwise I use TA Tripart. They were not transplanted. I also thought that maybe the lamp is too close so I raised it to 50cm. So far they are still not growing but I wasn't watering them for few days because people said that it could be also overwatering. Now I'm flushing them with only rainwater.

 

[Fotzenschlaeger]

Hey guys so I'm bringing update on my plants. I've moved them to new soil, started to use calimag and a little bit pH down (to about 6.0) and they recovered pretty well! Few weeks ago I switched to 12/12 cycle and they were doing pretty good. Now I have a problem that on one plant the tips of leaves are turning brown again but the second plant is perfectly good. They are the same strain, I'm giving them the same amount of fertilizer and they are in same distance from the light. About every 4th feed is just plain water. Im confused because the one plant is fine and the second is not, despite the fact that they are pretty much in same conditions. Any thoughts what the problem here may be?

 

[Eledin]

Nice recovery! Theyre looking good! That said:
Even if they are the same strain they are different phenotypes so some might eat less and some might eat more. This fairly common when planting seeds, and if they are different strains even more difference. Even with clones it can happen but is way less likely.
Thats nutrient burn, that plant cant take all the nutrients youre giving. When that happens to me I finish them off with some plain phed water instead of using only the same water that I use to water the others. You can also prepare a different badge of nutrients for her but thats more of a pain in the ass.

 

[Fotzenschlaeger]

Tha

Nice recovery! Theyre looking good! That said:
Even if they are the same strain they are different phenotypes so some might eat less and some might eat more. This fairly common when planting seeds, and if they are different strains even more difference. Even with clones it can happen but is way less likely.
Thats nutrient burn, that plant cant take all the nutrients youre giving. When that happens to me I finish them off with some plain phed water instead of using only the same water that I use to water the others. You can also prepare a different badge of nutrients for her but thats more of a pain in the ass.

Thanks, I was confused because of such difference between them. Last time I've fed only plain water but I will try some more for the burned one. Could you say from these pictures how much time will it take to harvest? If I shall bring nutes again later or would it be pointless?

 

[Eledin]

I would say you are looking at around 4-5 more weeks but that depends on the strain and ambiental conditions too, also stress. Maybe the one that is burnt will be slightly stunted for a few days so it might finish later, or it might finish sooner because of phenotype. Its really hard to tell until deeper intro flower but that would be my guess.
Dont stop giving her nutes, just give her less. If you see it keeps progressing give her even less. Give it only water one more time and then use half nute water half plain water. When they get hungry they start depleting the fan leaves from the lower node that still has them, once theyre done with the fan leaves of 1 node they will go to the next node and take them from there, thats an easy way to tell if theyre yellowing on the bottom because theyre hungry or because of something else. If all nodes start yellowing is not the same as if its progressive from one node to the next, indicates different problems.

 

[Fotzenschlaeger]

Nice recovery! Theyre looking good! That said:
Even if they are the same strain they are different phenotypes so some might eat less and some might eat more. This fairly common when planting seeds, and if they are different strains even more difference. Even with clones it can happen but is way less likely.
Thats nutrient burn, that plant cant take all the nutrients youre giving. When that happens to me I finish them off with some plain phed water instead of using only the same water that I use to water the others. You can also prepare a different badge of nutrients for her but thats more of a pain in the ass.

But doesn't nute burn show on the bottom leaves first? On my plant the brown tips are the top ones and the light is about 31cm away so it shouldn't be too close.

 

[Eledin]

I didnt think of light burn because in a previous post you said 50cm. What light was it? Depending on the wattage it might be too close and that would explain why the lower leaves are not burnt, light burn.

 

[Eledin]

I thought of the possibility that it can be both because I also see tips that are not on the top that are burnt but also tips that are on top and are not burnt but then again, I thought that at 50cm it would be less likely so I thought it was only nute burn.

 

[Eledin]

You have some spots too that indicate some sort un nute umbalance and that can happen when you feed her too much. Either because of salt accumulations or nute lock out. Can you get a picture of the lower leaves of that plant? I cant really see them too good.

 

[Fotzenschlaeger]

I didnt think of light burn because in a previous post you said 50cm. What light was it? Depending on the wattage it might be too close and that would explain why the lower leaves are not burnt, light burn.

Yeah, but it was in grow phase. For flowering phase I've put the light a little bit lower and for first few weeks the both plants were doing good. Also the second one isn't burned at all and they are in the same high, but as you said there can be differences even between the same strains. It's 240W LED and the manufacturer's advice recommends even closer distance

 

[Eledin]

Can you give me the exact model so I can see the PPFD chart online or post it here?

 

[Eledin]

See what I marked here, specially the lower leaf that is shadowed. I dont think thats the lights but as I said it could be both nute burn and light burn.

 

[Fotzenschlaeger]

You have some spots too that indicate some sort un nute umbalance and that can happen when you feed her too much. Either because of salt accumulations or nute lock out. Can you get a picture of the lower leaves of that plant? I cant really see them too good.

Some of them are are yellowing also in the middle part but no brown tips

 

[Fotzenschlaeger]

Can you give me the exact model so I can see the PPFD chart online or post it here?

The chart shows values for smaller growbox so IDK if it's helpful. I have 100x100cm. I will flush her with plain water then and observe.