Yellow Veins & Nutrient Burn

Help please. 1st grow & I’m constantly getting this problem after only 1 week:




If i continue just giving it water there is no further growth. But when I’ve tried feeding the seedings (even with less than ¼ strength amounts) I get nutrient burn FYI - I’m using Plant Magic Soil & read online it's a light mix so it needs feeding early on. Below are my details

Strain: Northern Lights (Royal Queen Seeds)

Photo or Auto: auto

plant age: 7 days from breaking soil

pot size: 11L

has it been repotted? and when?: never

Medium: Plant Magic Soil 70% & Perlite 30%

Air temps (max min): 22-26 degrees C

humidity: around 60%

lighting type and wattage (hps, led, cfl): Mars Hydro 300W 600W LED Grow Light

Light schedule: 20/4

ph level: 6.5 (Average) & I’ve been monitoring my PH really closely.


feed schedule and nutes:

they get fed when they show signs of yellowing (around 7 days after breaking the soil) with Plant Magic Oldtimer Grow, and Plant Magic biosilicon around ¼ strength amounts which still gives them nute burn. As I have been suffering this same problem for 4 months & gone through 20+ seeds in trying various cures (i.e. not feeding them / changing the PH levels etc). Therefore I am starting to think the problem may be related to the roots not uptaking the nutrients or how I am feeding them perhaps?


But I’m not sure how I could help the roots further as I have a fan giving them oxygen, and I’ve watched several you tube vids on how to feed the plants. So not sure what to do now. Please help!

For each single seedling that dies from dehydration, thousands are tortured, even murdered, via drowning in overly saturated soils.

Chip Green said:

For each single seedling that dies from dehydration, thousands are tortured, even murdered, via drowning in overly saturated soils.

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Thanks for the reply. I should make it clear the above photo isn't of my actual plant or medium. It is a photo I saw from another forum when you type in yellow veins seedlings into google (I don't have a camera to take photos). But my plants look identical to that problem, and as mentioned above my medium is Soil 70% & Perlite 30%

Nevertheless based on your comment I shall try an loosening the soil up more after a watering / feed with my finger. However is there not a danger of touching / damaging the roots after doing this?

Chip Green said:

For each single seedling that dies from dehydration, thousands are tortured, even murdered, via drowning in overly saturated soils.

Click to expand...

LOL

What I meant was, a very high percentage of seedling health issues, are directly related to being watered far too frequently.
Most new(ish) , heck even some experienced growers, would be completely shocked, at how little water a seedling actually NEEEDs to survive.

Chip Green said:

What I meant was, a very high percentage of seedling health issues, are directly related to being watered far too frequently.
Most new(ish) , heck even some experienced growers, would be completely shocked, at how little water a seedling actually NEEEDs to survive.

Click to expand...

I know I have done it.
I thought your comment was funny that is all.
If I was to guess his humidity is low and temp too.
Check out Vapour Pressure Density levels from growing.
Plant is not able to uptake enough water and is dying from nute toxicity.
If that is in check then out of my league other than proper lighting if that is there not sure then I would start again but sometimes plants do green up in odd places on leaves besides the ends where you would think it should be.

Chip Green said:

What I meant was, a very high percentage of seedling health issues, are directly related to being watered far too frequently.
Most new(ish) , heck even some experienced growers, would be completely shocked, at how little water a seedling actually NEEEDs to survive.

Click to expand...

Thanks and how often would you recommend I water the seedlings?

I usually moisten the soil prior to placing the seedling into it and after around 7 days under light it then dries out. At which point the seedlings start to go yellow & seems stunned. Should I therefore leave it for a few more days before watering them?

Well, sheeeyat .. if you're not giving it water for a week, that may not be the culprit then. Those tiny roots actually thrive in nearly dry mixes from my experiences. It's a fine line to walk...
Maybe the soil mix is just a tad too spicy for those particular genetics?
When I go from seed, I usually use straight coco, with very mild nutes. Once I soak the coco, the seed goes in, and might not see a drip, until the cup goes bone dry...

Just to clarify the pot is fully watered WHEN the seeding is placed within it. When the pot dries up is when the seedlings start to go yellow.

I don't think the problem is the soil mix being too spicy either because everything I've read online about Plant Magic Superme is it is a light mix, almost with no nutes in it. In fact that was one of the reasons it was recommended on other forums as people could add in their nutes. Which might explain why the seedings go yellow after 7 days.

I've also tried using different genetics as well - with the same problem?

Could it be anything else. i.e. how much should I give it when watering for example? Or loosing the soil after a watering?

ibsey said:

Just to clarify the pot is fully watered WHEN the seeding is placed within it. When the pot dries up is when the seedlings start to go yellow.

I don't think the problem is the soil mix being too spicy either because everything I've read online about Plant Magic Superme is it is a light mix, almost with no nutes in it. In fact that was one of the reasons it was recommended on other forums as people could add in their nutes. Which might explain why the seedings go yellow after 7 days.

I've also tried using different genetics as well - with the same problem?

Could it be anything else. i.e. how much should I give it when watering for example? Or loosing the soil after a watering?

Click to expand...

I never add nutes to seedlings straight away - i always wait a week or so, they might show some signs of yellowing
and even then i would only add 1/4 strength veg nutes

on watering, i would fully water the seedling pot before dropping in the seed, then just go by the weight of the pot, when it feels super light you'll know it's dry and it's time to add water, just till you see some runoff at the bottom

Hi All,

Further to the above here's an update on my latest grow which is now 7 days old (from being planted into the soil). The seedling is just starting to sprout its second set of leaves, and based on the comments above I have not / will not feed it any nutes for the first 4 weeks.

However despite this there are small patches of yellow starting to develop on the leaves mainly around the edges at the moment, however the veins are a noticable lighter shade of green in comparison to the rest of the plant. In addition to that, the second set of leaves which have just sprouted so are tiny (probably a 1/4 inch long), are more yellow than green and today is the first day the plant's main leaves have started to sag. Whereas before today they were standing firm and upright. There is still plenty of water in the soil, after me wetting it from 7 days ago prior to placing the seed into it. So unless anyone tells me otherwise I will not water it or give it nutes. But can anyone advise whether what I have explained above is normal or should I be doing concerned & doing something differently?

With this grow I have also pointed the fan away from the leaves, and given it a 18/6 light cycle (despite the seeds being auto flowers). Also the RH has been around 80% and the temps around 25 degrees C.

ibsey said:

Hi All,

Further to the above here's an update on my latest grow which is now 7 days old (from being planted into the soil). The seedling is just starting to sprout its second set of leaves, and based on the comments above I have not / will not feed it any nutes for the first 4 weeks.

However despite this there are small patches of yellow starting to develop on the leaves mainly around the edges at the moment, however the veins are a noticable lighter shade of green in comparison to the rest of the plant. In addition to that, the second set of leaves which have just sprouted so are tiny (probably a 1/4 inch long), are more yellow than green and today is the first day the plant's main leaves have started to sag. Whereas before today they were standing firm and upright. There is still plenty of water in the soil, after me wetting it from 7 days ago prior to placing the seed into it. So unless anyone tells me otherwise I will not water it or give it nutes. But can anyone advise whether what I have explained above is normal or should I be doing concerned & doing something differently?

With this grow I have also pointed the fan away from the leaves, and given it a 18/6 light cycle (despite the seeds being auto flowers). Also the RH has been around 80% and the temps around 25 degrees C.

Click to expand...

if it looks like it needs to be fed then I would feed it but start small like 1/4 to 1/3 strength

If it is in 11L pot of soil, don't feed it. Some potting mix comes out of the bag hot with nitrogen and phosphorus.

How is your RH so high?

Don_Sequitor said:

If it is in 11L pot of soil, don't feed it. Some potting mix comes out of the bag hot with nitrogen and phosphorus.

How is your RH so high?

Click to expand...

Its because I wetted the 11L pot before putting the seedling into it, and I have a small grow tent (1.6m x 0.8 x 0.. I have not watered the plant since putting it into the pot 7 days ago. I hope to post pictures of my plant in a few days time. I've just brought a camera to post pictures of my plant here... that is how desperate I am for a smoke.

Should be fun.

The problem here is planting a seedling in an 11L pot.

When the soil dries up the poor seedling roots aren’t probably anywhere near the water.

You need to start in something small.

Build a root system gradually by going up pot sizes in stages.

jondamon said:

The problem here is planting a seedling in an 11L pot.

When the soil dries up the poor seedling roots aren’t probably anywhere near the water.

You need to start in something small.

Build a root system gradually by going up pot sizes in stages.

Click to expand...

Thanks but I am growing an autoflower and read that you want to start it in its final pot size, as consistently moving it stuns the plant. Is that correct?

I've only choosen an autoflower because I thought it was easier for a novice. Would a photoperiod seed (which I understand you can pot up as you've suggested) be easier?

If so can anyone recommend the easiest strain to grow for a complete novice?

ibsey said:

Thanks but I am growing an autoflower and read that you want to start it in its final pot size, as consistently moving it stuns the plant. Is that correct?

I've only choosen an autoflower because I thought it was easier for a novice. Would a photoperiod seed (which I understand you can pot up as you've suggested) be easier?

If so can anyone recommend the easiest strain to grow for a complete novice?

Click to expand...

Follow this and you’ll never experience transplant shock.

https://www.rollitup.org/t/how-to-transplant-tutorial.395161/

This way transplanting can even be done during flower without any shock sustained.

Thanks and def will give that a go on the next seed I pop to see if that helps. Meanwhile I hope to post pictures of my current grow around Monday (when I receive the camera). ATM the leaves are now curled up so they are pointing downwards towards the soil and the yellowing (which started off around the edges) is increasing around the plant. The plant is now 11 days old and has not grown a single bit since day 7 when the yellowing started to occur. This is the plant I have NOT given any nutes to and since the soil was dry I have just given it a light watering to see if that might help it.

Meanwhile the original plant I posted about in the OP has now died owing to drying up. despite me giving it regular water. When I took it out of the soil, The roots were only one stem (i.e. no little branches coming out of it). So seems the prob is the roots are simply not growing what so ever perhaps due to not getting enough oxygen or water?

That's 21 seeds that have now died on me without making it to week 2

Please help me keep seed 22 alive.

Quick update, I think the problem is a lack of oxygen to the plant because since this morning, I put the plant outside and just did a quick check on it and the leaves are starting to perk back up. As mentioned above this morning the leaves had been pointing downwards towards the soil (i.e. at a 90 degree angle from the stem). Whereas a few minutes ago they were returning to their original position (i.e. 45 degrees from the stem). I'm going to leave it outside a bit longer, since it is only 21 degrees C where I live today (so not too warm) & see how the plants react this evening.

However this is not a long term solution for me since I live in a block of flats so cannot always leave the plants outside because other residents will soon notice what the plants are...especially when they grow bigger. Therefore it would help me to see any pictures of where people have located their grow tent / plants indoors. Particularly how close to a window / door their plant is?

I ask this because in my flat I only have a very small window to allow fresh air into the flat. Below is a photo I have found off the internet of the windows within my block of flats which only open a 1/4 of the way (i.e 22.5 degrees open).



So longer term it would be a REAL struggle to keep giving the plants outside (i.e. fresh) air. Whilst I have moved my grow tent as close to that single window within my flat as possible, I'm not sure it this will totally solve the problem?

So can anyone advise:

A) based on what I have described above - do you also think this could be my problem?

B) If I set up an intake fan (extracting air from that small window into the grow tent, would that help?