Seedling's starter leaves/cotyledons tips are turning yellow. Too much fertilizer?

[DjSuperman]

Strain: Gorilla Glue #4 Auto-flowering feminized
Age: 1.5 weeks
Light: 22 watt LED grow light @ 3000 lumens, 12 inches above plant, inside of a cardboard box with a Mylar emergency space blanket for reflection.
Circulation: AC Infinity MULTIFAN S5, Quiet Dual 80mm USB Fan
Pot: 3 inch DollarTree pot inside of a Solo cup, wrapped in aluminum foil
Watering Schedule: Everyday to Every other day because the soil dries out quickly

So this is my first time growing, I have been giving my seedling nothing but water ever since it sprouted, with 24 hours of light.

I am also growing it in "Miracle-Gro Nature's Care Organic & Natural Potting Mix with Water Conserve" which has Alfalfa Meal, Bone Meal, Earthworm Castings, and Kelp Meal in the soil. The soil is 0.15-0.13-0.15 NPK.

2 days ago, I watered it with 1/2 of a teaspoon of Alaska Fish Emulsion in 1 gallon of water, which is 1/4 of the full strength, which is supposed to be 2 teaspoons in 1 gallon of water. And the NPK is at 5-1-1.

Today, I noticed that the tips of the cotyledons aka first set of leaves are turning yellow.
The 2 sets of true leaves still looks green and healthy tho.
I am not sure if the cotyledons are getting ready to fall off, or if I just burnt my seedling with fertilizer.
If I burnt it with fertilizer, what should I do?

I am also planning to water it with Seed Sprout Tea, made from corn, and mungbean sprouts today or tomorrow. Do you guys think it's a good idea?

As you can see in the pictures, the true leaves looks dark green, while the starter leaves/cotyledons looks pale green/yellowish.


Normal Lighting

 

[hotrodharley]

Raise the light. I thought you were already told this on another thread you posted?

 

[DjSuperman]

Are you sure?
I would like to get a second opinion,
Because you did not address the issue of nutrient burn at all.
I mentioned that I fed the plant Fish Emulsion 2 days ago, and the leaves started turning yellow.
The light has always been the same....
Fish Emulsion is an organic fertilizer so it works slower than synthetic fertilizer.

I think if the tips were getting bleached, then it would happen to the entire plant, and not just the starter leaves?

 

[hotrodharley]

Good luck

 

[DjSuperman]

Good luck?
I joined this Forum to get some help, and advice from some OG growers....

 

[NwGKenny]

That seedling looks fine dude, lol

stop feeding for at least a week in my opinion.

I have honestly never given such a small plant ANY fertilizer, especially when there are already ferts in the growing medium.

 

[Herb & Suds]

Are you sure?
I would like to get a second opinion,
Because you did not address the issue of nutrient burn at all.
I mentioned that I fed the plant Fish Emulsion 2 days ago, and the leaves started turning yellow.
The light has always been the same....
Fish Emulsion is an organic fertilizer so it works slower than synthetic fertilizer.

I think if the tips were getting bleached, then it would happen to the entire plant, and not just the starter leaves?

So you answered your own question
Did you use nutrients too soon = yes
Is that soil now hot for the lil thing = yes
Is there anything you can do about it other than not feeding it and reducing amount of fish food next time = nope
Give it a week or two of water only you are going to kill it with love
And you need more light

 

[DjSuperman]

So you answered your own question
Did you use nutrients too soon = yes
Is that soil now hot for the lil thing = yes
Is there anything you can do about it other than not feeding it and reducing amount of fish food next time = nope
Give it a week or two of water only you are going to kill it with love
And you need more light

Another poster on the forum just told me that I needed to raise the light, "HotRodHarley" to be exact....

So which is it?
Raise the light?
Or give it more light?

 

[DjSuperman]

Can I try to flush it with water to get the fish fertilizer out of the soil?
Or should I just let it sit for a week or 2 with just plain water once a while?

 

[Herb & Suds]

Another poster on the forum just told me that I needed to raise the light, "HotRodHarley" to be exact....

So which is it?
Raise the light?
Or give it more light?

He thought you were using a LED COB type as I read it it is just a LED bulb
If I am right you need more light , distance on those isn't a big deal for the most part except you need them close

 

[Herb & Suds]

Can I try to flush it with water to get the fish fertilizer out of the soil?
Or should I just let it sit for a week or 2 with just plain water once a while?

I already said to leave it be, all these things you are doing are inducing stress on the plant
Slow and steady is the way to learn

 

[DjSuperman]

Okay....
So let it be...
How about introducting Seed Sprout Tea made of corn and mungbean sprouts. I heard that it has enzymes from seedlings that will make the plant grow faster, like Human Growth Hormones, but for plants....
Everyone says that seedlings has everything they need to grow inside of it, but what if I introduce more?

 

[Herb & Suds]

Okay....
So let it be...
How about introducting Seed Sprout Tea made of corn and mungbean sprouts. I heard that it has enzymes from seedlings that will make the plant grow faster, like Human Growth Hormones, but for plants....
Everyone says that seedlings has everything they need to grow inside of it, but what if I introduce more?

If inducing more was a good idea , everyone would do it
Give that thing time to reach teen age then you can start playing with teas and such
BTW it is a bad practice to create multiple threads about the same thing
Good luck

 

[NwGKenny]

Just don't do anything except give it reverse osmosis water/distilled water for a couple weeks

if you flush a seedling it is probably going to die from damping off, I have honestly never even heard of someone flushing a seedling.

 

[NwGKenny]

Okay....
So let it be...
How about introducting Seed Sprout Tea made of corn and mungbean sprouts. I heard that it has enzymes from seedlings that will make the plant grow faster, like Human Growth Hormones, but for plants....
Everyone says that seedlings has everything they need to grow inside of it, but what if I introduce more?

You need to buy this and read it cover to cover

the advice here will only go so far, and we won't be able to fix most things unless you prevent them in the first place.

Honestly, you need to get a basic understanding of cannabis growing before you come on here for asking for advice from people that actually put in the time to read books and thousands of internet forum posts. (This sounds like I'm being a jerk, but I am really not. You educating yourself will save you time and stress of having to rely on US to help you with every little thing that goes wrong)

 

[DjSuperman]

So I left it alone for 3 days, and I didn't even raise the lights, or anything.
And look at this thing!!!!
It looks amazing!!!
I guess the Fish Fertilizer actually works and didn't burn the plant!!!
The starter leaves/cotyledons are completely yellow now, but the true leaves are super dark green and grew even more!!!
It's a super spiky little thing.

 

[jtrizzy]

now dont go watering it now. Leave it. Make sure that pot is good and dry before watering again. Get a real light as well. Its now into VEG and needs some actually wattage on her. Good luck with the grow.

 

[danjac82]

I

Strain: Gorilla Glue #4 Auto-flowering feminized
Age: 1.5 weeks
Light: 22 watt LED grow light @ 3000 lumens, 12 inches above plant, inside of a cardboard box with a Mylar emergency space blanket for reflection.
Circulation: AC Infinity MULTIFAN S5, Quiet Dual 80mm USB Fan
Pot: 3 inch DollarTree pot inside of a Solo cup, wrapped in aluminum foil
Watering Schedule: Everyday to Every other day because the soil dries out quickly

So this is my first time growing, I have been giving my seedling nothing but water ever since it sprouted, with 24 hours of light.

I am also growing it in "Miracle-Gro Nature's Care Organic & Natural Potting Mix with Water Conserve" which has Alfalfa Meal, Bone Meal, Earthworm Castings, and Kelp Meal in the soil. The soil is 0.15-0.13-0.15 NPK.

2 days ago, I watered it with 1/2 of a teaspoon of Alaska Fish Emulsion in 1 gallon of water, which is 1/4 of the full strength, which is supposed to be 2 teaspoons in 1 gallon of water. And the NPK is at 5-1-1.

Today, I noticed that the tips of the cotyledons aka first set of leaves are turning yellow.
The 2 sets of true leaves still looks green and healthy tho.
I am not sure if the cotyledons are getting ready to fall off, or if I just burnt my seedling with fertilizer.
If I burnt it with fertilizer, what should I do?

I am also planning to water it with Seed Sprout Tea, made from corn, and mungbean sprouts today or tomorrow. Do you guys think it's a good idea?

As you can see in the pictures, the true leaves looks dark green, while the starter leaves/cotyledons looks pale green/yellowish.
View attachment 4286839 View attachment 4286840

Normal Lighting
View attachment 4286842
View attachment 4286841

Its from your watering

 

[danjac82]

Are you sure?
I would like to get a second opinion,
Because you did not address the issue of nutrient burn at all.
I mentioned that I fed the plant Fish Emulsion 2 days ago, and the leaves started turning yellow.
The light has always been the same....
Fish Emulsion is an organic fertilizer so it works slower than synthetic fertilizer.

I think if the tips were getting bleached, then it would happen to the entire plant, and not just the starter leaves?

So I left it alone for 3 days, and I didn't even raise the lights, or anything.
And look at this thing!!!!
It looks amazing!!!
I guess the Fish Fertilizer actually works and didn't burn the plant!!!
The starter leaves/cotyledons are completely yellow now, but the true leaves are super dark green and grew even more!!!
It's a super spiky little thing.
View attachment 4289587 View attachment 4289588

Fish fertilizer at a week old? Yea the seedling can look nice and dark green for a few days and then toxicity hits home. Wondering if you’ll update with a pic

 

[danjac82]

Let’s see a pic of that plant.