4 day old seedling / lime green veins

[Capt.Quirk]

I do get scared of overwatering, on the other hand I made sure the soil around the seedling was moist all the time.
I can try giving more water and less often,
its just from what I've "learned" I thought it was a bad thing to have to roots in wet soil for too many days.

Thank you for trying to help

You hit the nail on the head with "it's a bad thing to have roots in wet soil." Roots have to take in oxygen and give off co2.
They can't do it in a saturated environment. Think moist or damp, never wet, all through the grow. You can't overwater a well
draining medium. The problem is watering too often,

 

[Mañ'O'Green]

Hello,

I have been looking everywhere online but can't seem to find an identical issue.

I am new to growing and in the last weeks I have tried 6 different seeds with same painful results.

The seedling her first 2 leaves, their veins become lime green already after 3 days after coming above soil.
This ends up stunting the seedling and new growth comes out yellow, the lime green ends up turning yellow and starts burning.
The tips end up burning, like a nutrient burn. But HOW?
First I was using some random Lightmix soil and thought that was the issue,
now I have switched to Biobizz Lightmix however the lime green is showing again..

I do not understand what I'm doing wrong, here what I did this run with 3 seeds;

3x3 Tent,
BioBizz nutrients (but obviously I don't even get to the feeding point)
TSW2000 (50%, 65CM distance)
Light schedule 20/4
RH always around 60%
Temps 24C day 22C night
In and outline fan ON
2 active fans in the tent (none directly on the seedling)


*Fill Biobizz lightmix in a 11L fabric pot.
*Moisturize the soil with 3L ( tapwater, PH down to 6.2 , EC 0,4, PPM 240 ) and let it dry out under the light while germinating in a paper towel.
*3 days later soil is mostly dry, mix some mycorrhiza in it and plant the germinated seed.
*Water about 50ml where the seed is placed ( tapwater, PH down to 6.2 , EC 0,4, PPM 240 )
*Place the pot under the TSW2000 at 65cm distance, 50% power (=150watt)
*Use a humidity dome (with holes on top to prevent damping off).
*RH outside dome 60%, temps around 24C.
*2 days later seed has sprouted and shows first set of leaves.
*Soil has dried out after removing the dome so again same measurements for 50ml of water, I circle it around the seedling.
*Seedling looking normal, starting to grow out the leaves and is about 5cm tall, I don't water unless I see it dried out and check with finger.

but I don't even get to the next watering before the veins start to turn lime green and I get flashbacks from my previous try,

What am I doing wrong here? From what I've learned its impossible to get deficiencies this early?
It sounds crazy to add nutes, the seedling is not even 1 week old.

The other 2 seed are 1 day behind but I wouldn't be surprised to see the same issue on them tomorrow : (

Hope any of you know what to do here.
Thank you

That plant looks perfectly fine to me!

A cannabis tap root can grow 9 inches in three days! The laterals are not far behind. The first week or so most of the plant's growth is in the root system. This gives the appearance that the plant is not growing or being stunted. IT IS NOT. Let those poor babies grow.

Watering in a small circle can stunt the growth. What you need to learn about watering will come with practice. Here are the basic rules: Never let the soil dry out. Soil and or coco can become hydrophobic if allowed to dry. This means it repels water. This in turn will create dry pockets in the soil and roots there will die. If your soil - coco have accidentally dried out use a surfactant to help re-wet it. I like yucca powder. Don't let soil remain soggy by watering too much too often. Root rot, damping off, molds, fungus gnats and other problems start in soggy soil. When you do water water the entire pot. How to learn when to water starts before you plant the seed. Fill your container with fresh soil/coco and weigh it (heft it) this is the lightest weight and consider it a dry pot. Now slowly water until the soil/coco will no longer absorb the water and run-off begins; weigh the pot (heft it) this is the maximum water, the wettest the pot can get. The difference between wettest and driest is the maximum water weight, for ease of explanation lets just say the water weighs 20 pounds. When the pot loses 10 pounds (half of the water weight) it is time to water again. There is an art to watering.

Your temperatures are on the low side for seedlings 27°C is better with >60% RH.

 

[Jaydot]

That plant looks perfectly fine to me!

A cannabis tap root can grow 9 inches in three days! The laterals are not far behind. The first week or so most of the plant's growth is in the root system. This gives the appearance that the plant is not growing or being stunted. IT IS NOT. Let those poor babies grow.

Watering in a small circle can stunt the growth. What you need to learn about watering will come with practice. Here are the basic rules: Never let the soil dry out. Soil and or coco can become hydrophobic if allowed to dry. This means it repels water. This in turn will create dry pockets in the soil and roots there will die. If your soil - coco have accidentally dried out use a surfactant to help re-wet it. I like yucca powder. Don't let soil remain soggy by watering too much too often. Root rot, damping off, molds, fungus gnats and other problems start in soggy soil. When you do water water the entire pot. How to learn when to water starts before you plant the seed. Fill your container with fresh soil/coco and weigh it (heft it) this is the lightest weight and consider it a dry pot. Now slowly water until the soil/coco will no longer absorb the water and run-off begins; weigh the pot (heft it) this is the maximum water, the wettest the pot can get. The difference between wettest and driest is the maximum water weight, for ease of explanation lets just say the water weighs 20 pounds. When the pot loses 10 pounds (half of the water weight) it is time to water again. There is an art to watering.

Your temperatures are on the low side for seedlings 27°C is better with >60% RH.

Saturating till run off is what I did to begin with, so when I feel deeper inside the pot I can still feel some moisture.
but perhaps it didn't get enough water around the roots because its drying out and I add too little water.
The pot does feel alot lighter, I just didn't want to overwater it because the seedling always seemed happy apart from the lime veins.

Its confusing because what you learn from books or videos are all so different.
Some say give very little water, some say water the whole soil,
some say put the light very close at 25%, some say far away at 100%.

I tried to read and learn so much so I would not fail but still managed to fuck something up right from the start lol.

 

[Mañ'O'Green]

Saturating till run off is what I did to begin with, so when I feel deeper inside the pot I can still feel some moisture.
but perhaps it didn't get enough water around the roots because its drying out and I add too little water.
The pot does feel alot lighter, I just didn't want to overwater it because the seedling always seemed happy apart from the lime veins.

Its confusing because what you learn from books or videos are all so different.
Some say give very little water, some say water the whole soil,
some say put the light very close at 25%, some say far away at 100%.

I tried to read and learn so much so I would not fail but still managed to fuck something up right from the start lol.

Yes it can be confusing with so much information. The problem is it is not all good information. It is like germinating in a paper towel - even some seed vendors recommend it. Yet if you ever looked at a germinating seed with a 200X microscope and witnessed the lateral root hairs growing into the paper towel that get ripped off every time you move the towel or seed you would not use it. Does it work, sure most of the time. Does it harm the plant IMPO yes!

Anyhow I have grown a lot of bad plants but that is how I learned to grow these:

 

[low_and_slow]

Anyhow I have grown a lot of bad plants but that is how I learned to grow these:

Why would anyone want to grow larfy regs like those?!?!



(felt the need to add the /s tag to this post, your grow looks like NASA)

 

[Mañ'O'Green]

Why would anyone want to grow larfy regs like those?!?!



(felt the need to add the /s tag to this post, your grow looks like NASA)

I would not call 57 ounces (Photoperiod)

Photoperiod - Photoperiod Summer 2020

I am getting a later start than I had planned but here we grow again. The strains: Citradelic Sunset by Ethos genetics - Flower 10 weeks. from GHOST TRAIN HAZE x MANDARIN SUNSET Green Crack By Humboldt Seed Organization 9 - 11 Weeks Flower. from a 1989 SSSC Skunk#1 and an isolated Afghani...

www.autoflower.org

and 39 ounces (Autos)

https://www.autoflower.org/threads/short-stuff-magic-strains-zambeza.69239/

from a 24 SqFt. space and six plants LARFY!

 

[Jaydot]

Yes it can be confusing with so much information. The problem is it is not all good information. It is like germinating in a paper towel - even some seed vendors recommend it. Yet if you ever looked at a germinating seed with a 200X microscope and witnessed the lateral root hairs growing into the paper towel that get ripped off every time you move the towel or seed you would not use it. Does it work, sure most of the time. Does it harm the plant IMPO yes!

Anyhow I have grown a lot of bad plants but that is how I learned to grow these:

View attachment 1289288View attachment 1289289

Yeah I've read about that too, high quality paper towels will fuck them up.
I figured it was going to be a learning experience the first grow but this lime green thing has been an issue since my first try lol.
Hopefully adding more water will fix this issue, I couldn't find anything online on this issue regarding seedlings.
I'll keep the post updated for future first time growers.

 

[Mañ'O'Green]

Yeah I've read about that too, high quality paper towels will fuck them up.
I figured it was going to be a learning experience the first grow but this lime green thing has been an issue since my first try lol.
Hopefully adding more water will fix this issue, I couldn't find anything online on this issue regarding seedlings.
I'll keep the post updated for future first time growers.

I do not see an issue.

 

[Jaydot]

Here is what they look like today after their dark cycle,

You can see alot of lime colors, which I understand occurs often with new growth, but the veins shouldn't look like that.
There is also a little bit of yellow on the 1st picture

The 3rd one in general looks pretty good, was born with white tips, apparently I shouldn't worry about that.

 

[Jaydot]

I do not see an issue.

The issue is that with my last try I had 3 seeds turning yellow and stunted after 1 week
and it started with the lime green veins.
So I came to look for help to prevent the same thing from happening.
Even though I had perfect conditions, it was possibly underwatering.
I added some pics of what they look like today.