Need help, leaves are pale, plants are not growing

[Eledin]

For now I would get that light up to at least 45cm. You lowered too much which probably stressed the plant, thats a very big sudden change in light from 50 to 33cm. I think you have both nute burn and light burn, on top of that the plant must be stressed so she might not be taking nutes as it should so there can be a deficiency at play too. The light is definetely affecting that plant, but now to know if its also ph or nute burn or its only because the plant is stressed because of the light I need to know:
1. What soil did you use to transplant them?
2. What nutrients and supplements are you feeding? How often do you feed them per week?

 

[Fotzenschlaeger]

For now I would get that light up to at least 45cm. You lowered too much which probably stressed the plant, thats a very big sudden change in light from 50 to 33cm. I think you have both nute burn and light burn, on top of that the plant must be stressed so she might not be taking nutes as it should so there can be a deficiency at play too. The light is definetely affecting that plant, but now to know if its also ph or nute burn or its only because the plant is stressed because of the light I need to know:
1. What soil did you use to transplant them?
2. What nutrients and supplements are you feeding? How often do you feed them per week?

I've switched the cycle and lowered the lamp about 5 weeks ago and since then I was observing if there are some burns but there were not. About 2 weeks ago I noticed that the one plant is slightly more pale than the other one but still there were no burns or yellowing leaves and the current state occurred about 1 week ago (those burned tips) pH of water is from 6.0-6.5 after adding nutes and it's rain water. I'm using TA tripart at half of the recommended dose and Calimag also from TA. I'm feeding them every 3rd day and about every 4th feed it's just plain water to prevent nutes lock out. The soil is just some random "all purpose vegetable soil" from hobby market. At the beginning when there were problems the both plants were affected but now only the one of them has problems, the second one looks good.

 

[Eledin]

I've switched the cycle and lowered the lamp about 5 weeks ago and since then I was observing if there are some burns but there were not. About 2 weeks ago I noticed that the one plant is slightly more pale than the other one but still there were no burns or yellowing leaves and the current state occurred about 1 week ago (those burned tips) pH of water is from 6.0-6.5 after adding nutes and it's rain water. I'm using TA tripart at half of the recommended dose and Calimag also from TA. I'm feeding them every 3rd day and about every 4th feed it's just plain water to prevent nutes lock out. The soil is just some random "all purpose vegetable soil" from hobby market. At the beginning when there were problems the both plants were affected but now only the one of them has problems, the second one looks good.

Feeding every third day and giving water every 4th feed is something that you did to try to match what the feeding table says it needs per week or? Im confused by that, usually people use nutes-water-nutes-water.
I would advice to stay away from commercial soil when youre growing weed. Soil is a very very important component for the proper function of the plants and you need to avoid all purpose commercial brands and stick to brands that do soil for weed. There's plenty of options, biobizz is one, maybe you can get top crop in germany its way cheaper and good quality, from Spain. Commercial soils will give you all kinds of headaches.
As for why one is affected and the other not its just phenotypes, most likely that phenotype is more sensitive to nutes and light, nothing uncommon when youre going from seed as I said, and once a problem appears it can quickly snowball into more problems, specially if theyre stressed.

 

[Eledin]

One example:

shop-weedness.de

Also you want light mixes if youre going from seed. Avoid all-mix and heavy-mix, those are better for transplants because they have more nutrients.

 

[Fotzenschlaeger]

Feeding every third day and giving water every 4th feed is something that you did to try to match what the feeding table says it needs per week or? Im confused by that, usually people use nutes-water-nutes-water.
I would advice to stay away from commercial soil when youre growing weed. Soil is a very very important component for the proper function of the plants and you need to avoid all purpose commercial brands and stick to brands that do soil for weed. There's plenty of options, biobizz is one, maybe you can get top crop in germany its way cheaper and good quality, from Spain. Commercial soils will give you all kinds of headaches.
As for why one is affected and the other not its just phenotypes, most likely that phenotype is more sensitive to nutes and light, nothing uncommon when youre going from seed as I said, and once a problem appears it can quickly snowball into more problems, specially if theyre stressed.

I've read somewhere that it should be every 4th feed only water and they were doing fine. As for every 3rd day, it's when the top layer of soil is dry already. Some people don't flush with water at all and I've also read what you mentioned that it's nutes-water-nutes-water and so on, so I was not sure how to do it properly and until now it worked quite good with every 4th feed only water. Yeah, that commercial soil wasn't ideal but I had it at home already and also some ppl say that it doesn't matter that much. Well that's quite problem for me that there are tons of information and some of theme are opposing each other.

 

[Eledin]

I mean... it depends. If youre gonna ammend your soil after you buy it then yes, it doesnt matter that much, but if youre gonna use it as it is, it does matter quite a bit. I dont know anyone here that uses commercial soil for growing and often people who come to the forum with problems like you are using mediocre soil. I know for sure that I dont want no all purpose soil for my plants hahaha not even for my household plants, I buy soil specific for their needs. I have 2 types of cactus and a bonsai, the cactuses have soil for cactuses and the bonsai has soil for bonsais. And more importantly, my weed has soil for weed.

 

[Fotzenschlaeger]

I mean... it depends. If youre gonna ammend your soil after you buy it then yes, it doesnt matter that much, but if youre gonna use it as it is, it does matter quite a bit. I dont know anyone here that uses commercial soil for growing and often people who come to the forum with problems like you are using mediocre soil. I know for sure that I dont want no all purpose soil for my plants hahaha not even for my household plants, I buy soil specific for their needs. I have 2 types of cactus and a bonsai, the cactuses have soil for cactuses and the bonsai has soil for bonsais. And more importantly, my weed has soil for weed.

Well it was more like quick solution to save the plants. I was thinking that I would throw them away and start all over again but then I thought I would try that commercial soil and see what happens. So I googled a bit RN and the grow sites say that flushing with plain water every 3-4th feed and feeding 1-2 a week should be optimal. But yeah every plant needs a bit different schedule I guess.

 

[Eledin]

I understand, sometimes you have to go with what you have and since you were not sure if the plants would make it I see why you wouldnt spend money in more soil but from now on if youre gonna keep growing I would suggest to stick with brands that are sold in weed grow shops.
Yes the idea is to feed them once or twice per week, but your soil takes longer than usual to dry probably because it doesnt have enough perlite, thats one of the major problems with commercial soil, it retains A LOT of water and it makes more difficult to manage the feeding.

 

[Eledin]

Its also not the best for the roots. I buy soil for weed which comes with a fair ammount of perlite and on top of that I buy more perlite to add it myself. Biobizz is the brand that has more perlite with 30% perlite and 70% peat, that would be a great option if you dont wanna have to buy more perlite and add it yourself.

 

[Eledin]

Perlite are the white small rocks that you will see in your soil, if it has any. They help oxygenate the roots when the soil is full of water and also since they dont absorb as much water as compost or peat your soil dries faster.

 

[Fotzenschlaeger]

Perlite are the white small rocks that you will see in your soil, if it has any. They help oxygenate the roots when the soil is full of water and also since they dont absorb as much water as compost or peat your soil dries faster.

There is actually a 3rd plant in the perlite/soil mix I mentioned at the beginning of this thread but since she wasn't doing as bad as the other 2 I didn't transplanted her, only flushed her (also I kept her there for eventual comparison to see if the soil was the problem at the beginning) now she's doing also well so I didn't mention her today either. I think there was problem with nutes dosage and absence of Calimag because they recovered quite good afterwards. For the next grow I will try that biobizz soil. It's only my second grow so there's a lot to learn.

 

[Eledin]

For your second grow thats great! They look good! But beware because you have bugs munching on your leaves.

Those yellow dots look like mite damage, check under the leaf with a loupe. Have you seen any insects flying around? Could also be thrips. Or maybe you already noticed and eliminated them.

 

[Fotzenschlaeger]

For your second grow thats great! They look good! But beware because you have bugs munching on your leaves.
View attachment 2495600
Those yellow dots look like mite damage, check under the leaf with a loupe. Have you seen any insects flying around? Could also be thrips. Or maybe you already noticed and eliminated them.

Thanks for advice! I've noticed only some little flies flying around but that was some time ago and I thought that they are harmless for the plants. In recent time I didn't notice any bugs or flies but I'm gonna check. I thought that indoors bugs are no problem. Is there any prevetion?

 

[Fotzenschlaeger]

For your second grow thats great! They look good! But beware because you have bugs munching on your leaves.
View attachment 2495600
Those yellow dots look like mite damage, check under the leaf with a loupe. Have you seen any insects flying around? Could also be thrips. Or maybe you already noticed and eliminated them.

So I've checked the bottom site of the leaves and they look normal, no signs of bugs or insect eggs.Could it be caused by slighter higher humidity?