Seedling Issues

[n00bie]

Hi all,

Decided to give a shot at growing my own autos for the first time and have run into a couple of issues.

I have 2 strains one is gelato and another is purple punch. Now, I mixed the seeds when germinating so not sure which is which. Plant A is growing beautifully...but new growth seems slightly yellow, though it is small at the moment so idk if this is an issue. Plant B has had trouble since potting. It didn't sprout out of coco when I first potted it so I removed the coco on top to find it has turned yellow. I removed the coco and it has gradually turned back green within the past week or so. Assumed it was overwatering so started giving a little less water. Now, Its cotyledons are droopy and there are brown marks on them as well as on first true leaves. Can anyone advise if Plant A has any issue and what is happening to Plant B?

Specifications:
2X4 grow tent
900w viparspectra light turned to 33% veg and 20ish% bloom was going for 12/12 but changed to 16/8 light cycle recently
Dyna-Gro Grow 1ml into 1 gal + calmag

 

[NorthernLights_420]

What is your ph? How often and how much water you feeding at a time? I'd give them another week before you scare yourself to see what they do. They shud be fine.

 

[Mañ'O'Green]

@n00bie Welcome to AFN. I have had worse looking seedlings make it but you never know? I consider 8 out of ten a successful germination and normal, 6 out of ten raises an eyebrow and 5 or less out of ten something wrong!

 

[n00bie]

What is your ph? How often and how much water you feeding at a time? I'd give them another week before you scare yourself to see what they do. They shud be fine.

@n00bie Welcome to AFN. I have had worse looking seedlings make it but you never know? I consider 8 out of ten a successful germination and normal, 6 out of ten raises an eyebrow and 5 or less out of ten something wrong!

Ph is about 6.4, tested with the general hydroponics ph control kit. I am considering getting a digital one as I find the color to be somewhat ambiguous. I water ~once a week when the coco is mostly dry...though I do think I may be watering too much. I water until a little bit comes out the bottom of the pot - will probably tone that down until they get bigger.

I intend to give this baby some more time first grow so not extremely high expectations but this will be a good experiment leading into my next grow!

 

[Gutlez]

Hi all,

Decided to give a shot at growing my own autos for the first time and have run into a couple of issues.

I have 2 strains one is gelato and another is purple punch. Now, I mixed the seeds when germinating so not sure which is which. Plant A is growing beautifully...but new growth seems slightly yellow, though it is small at the moment so idk if this is an issue. Plant B has had trouble since potting. It didn't sprout out of coco when I first potted it so I removed the coco on top to find it has turned yellow. I removed the coco and it has gradually turned back green within the past week or so. Assumed it was overwatering so started giving a little less water. Now, Its cotyledons are droopy and there are brown marks on them as well as on first true leaves. Can anyone advise if Plant A has any issue and what is happening to Plant B?

Specifications:
2X4 grow tent
900w viparspectra light turned to 33% veg and 20ish% bloom was going for 12/12 but changed to 16/8 light cycle recently
Dyna-Gro Grow 1ml into 1 gal + calmag

View attachment 1238182View attachment 1238183View attachment 1238184

What water source are you using? Normally seedlings don’t need any nutrients for a good 3 weeks, those oval leaves you see have enough nutrients to get them through the seedling stage.

 

[n00bie]

What water source are you using? Normally seedlings don’t need any nutrients for a good 3 weeks, those oval leaves you see have enough nutrients to get them through the seedling stage.

First week was just cal mag mixed with water. Weeks 2 and 3 - one gallon tap water (pretty clean water around my area ~40ppm mixed with 1ml of Dyna-Gro Grow and 1ml cal mag. Solution comes out to 284ppm. As of today they are 3 weeks old! I am also using Mother nature coco + perlite mix that I did not buffer. Also, Is there a good feed chart I can follow for my next grows? I current have Dyna-Gro Grow + Bloom, Cal-Mag Plus and am investing in some Botanicare Silica Blast.

 

[NorthernLights_420]

I agree that you dont need nutrients right away. Start feeding nutes at 2 to 3 weeks. I recommend getting a good ph pen also. Apera makes good affordable ones. I got the Cadillac of meters. The bluelab combo meter. Cost a pretty penny but accurate and worth the investment. The water quality you said is really good for sure so I dont think that's the problem. Back off the nutes til week 2 or 3 and then water when your pots dry. Lift then up to tell the weight when they're dry and wet so you got a feel of when to feed.

 

[NorthernLights_420]

They're way too young to need cal mag right now too. Dont feed anything til they're bigger. Like 4 to 5 sets of leaves and branches you shud start feeding then. Always add calmag first then your base nutes. Always mix well after adding each item to your feed. Dont overfeed. It's better to underfeed than overfeed. Just some tips that may help you on your journey. If you have questions feel free to ask the community. You came to the right place. We family here! We help each other!

 

[n00bie]

They're way too young to need cal mag right now too. Dont feed anything til they're bigger. Like 4 to 5 sets of leaves and branches you shud start feeding then. Always add calmag first then your base nutes. Always mix well after adding each item to your feed. Dont overfeed. It's better to underfeed than overfeed. Just some tips that may help you on your journey. If you have questions feel free to ask the community. You came to the right place. We family here! We help each other!

Thank you, appreciate all the help!

 

[Mañ'O'Green]

What water source are you using? Normally seedlings don’t need any nutrients for a good 3 weeks, those oval leaves you see have enough nutrients to get them through the seedling stage.

This is not true in hydroponics and coco is hydroponics. Seedlings need to be fed from day 1. 25% strength balanced nutrients along with kelp and Humic Acid, 50% strength week 2 along with Bio-stimulants, Silica, B-Vitamins Kelp and Humic Acid. Then bump the nutrients up 10% per week until you get a bit of tip burn. Then back off 10% and you will be dialed in on what this plant likes.

First week was just cal mag mixed with water. Weeks 2 and 3 - one gallon tap water (pretty clean water around my area ~40ppm mixed with 1ml of Dyna-Gro Grow and 1ml cal mag. Solution comes out to 284ppm. As of today they are 3 weeks old! I am also using Mother nature coco + perlite mix that I did not buffer. Also, Is there a good feed chart I can follow for my next grows? I current have Dyna-Gro Grow + Bloom, Cal-Mag Plus and am investing in some Botanicare Silica Blast.

Never feed a single element. You should always feed a balanced fertilizer. If you need to add Cal-Mag because you see the need add it to your regular feeding. Where did you get your Feeding schedule? New growers always want to reinvent the wheel?

When you feed a single element it is 100% of what is presented to the roots. Elements do not blend in the media (except water) So by presenting only Cal-mag you will be locking out Potassium, Magnesium and Boron from the plant.



IMHO it is best to use a vendors entire line ONLY. They spend millions of dollars developing nutrients to work together to achieve the best possible results. It is all about Liebig’s law of the minimum. When you understand this you will understand why you should not mix-n-match your own. The only exception to this rule is when you have deficiencies (it won't happen often if using nutrients correctly). There are a couple of additives I do like and use: Azos and Mykos are microzae and beneficial fungus, Botanicare HydroGuard protects roots in Soil/DWC. I use the Bio-stimulants Kelp, Humic Acid, and B-vitamins. Other than this I use a vendors entire line only on their schedule for what I am doing. As to the strength, the vendors charts are a beginning point and for many strains or phenos it is too strong but not all strains or vendors. So I have a system where I start seeds at 1/4 strength for the first week with a pinch of kelp and humic acid then 50% for the next and I continue to increase by 10% each week until tip burn is observed then back off 10%. This gets you to where the plant likes it not just blindly following the chart.

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.