Yellowing Veins and Failing Seedlings

[Stugots]

Hey Farmers,

Why do I struggle so much with indoor growing? I just CAN’T get weed to grow with my indoor setup and pro-mix hp and an LED light. It very well could be the bag seed, but it worked just fine when I put them under the sun this year? I have a Mars Hydro 1000W (150W) and a 2nd 150W light, I get the same results with either. I got week 1 down nooooo problem. 100% germination rate basically, and it sprouts wherever I plant after ~2days, looks nice and green until the Day 6/7 mark, and then it goes straight to hell. It always looks like an N or Cal problem. The leaves will always yellow from the veins (which I find odd) and the new growth will be yellow. The plant gets stunted and I usually just toss em.

Otherwise this monstrosity happens. A plant that’s been in veg for 3 months and is 2 inches tall.

Of all my trials, a solo cup with only holes in the bottom worked best. The roots start getting close to the bottom around day 6... really starting to stretch out towards the sides of the cup.
I’ve tried different water techniques like bottom watering or watering in a ring. I’ve tried just spraying the outside of the jiffy net with water to promote stretching of the roots. Nothing ever looks like what it does online for me where the plant is trying to hulk out of the jiffy pod, or roots surrounding the edge of the cup are so abundant. I’ve tried different ratios of pro-mix/perlite/EWC with no luck. I’ve tried the same thing with liquid noots and different run-offs for each cup (200ppm/300ppm/400ppm etc), no luck. For the first 2-3 weeks I shouldn’t even need nutrients (could just be the case with quality seeds), so at least one of these trials should have worked. I’ve tried pre-watering/drying the medium for 2 weeks to activate to dolomitic lime. Fans, no fans, exhaust, no exhaust, humidifier, no humidifier, tap water aerated for 24 hours, distilled with a touch of cal-mag, 50/50 tap and distilled, lake water @ 300ppm... I can not get pro-mix HP to work with Indoors. I’m really losing momentum here and wanted to make use of this bale of HP.

I’ll admit that in the early trials, I lost some to damping off, but those seedlings were looking like they were headed in the same direction regardless. Now I seem to have the damping off under control by only giving ~75ml of water each time (while in the solo cups) and waiting till the medium is decently dry.



I finally gave in and started a seed in basic Miracle Grow potting mix (0.21/0.11/0.16) thinking my problem would finally go away. Saaaaame thing. Couldn’t believe it.

4x4x7 tent. GH 3-part with Botanicare Cal-Mag, and Diamond Nectar.



Please help my non-green thumb havin’ ass. Thank you

 

[MegaStoner420]

Are you giving it any nutrients?

 

[Milson]

I suggest starting them in a peat pellet at first (jiffy pellet) and then transitioning from there into a soil mixture without any extended release (which rules out miracle gro). If your pH is good, then just give them water at first. Nothing else. Once they start looking light, feed them something.

My guess is your pH is messed up and/or you are feeding a seedling too much (which is almost anything at first).

 

[MegaStoner420]

I suggest starting them in a peat pellet at first (jiffy pellet) and then transitioning from there into a soil mixture without any extended release (which rules out miracle gro). If your pH is good, then just give them water at first. Nothing else. Once they start looking light, feed them something.

My guess is your pH is messed up and/or you are feeding a seedling too much.

Your exactly right, you dont really want to feed seedlings any nutrients until they officially start veg which is when the plant has 5 nodes or more

 

[tomatoesarecooltoo]

How close is the light?

 

[bellumromanum]

I suggest starting them in a peat pellet at first (jiffy pellet) and then transitioning from there into a soil mixture without any extended release (which rules out miracle gro). If your pH is good, then just give them water at first. Nothing else. Once they start looking light, feed them something.

My guess is your pH is messed up and/or you are feeding a seedling too much.

This and it looks like the light is cooking them a little maybe?

+1 on jiffy pellets, literally worked every time I've used them and I transplant into soil.

If you have an Android you can download one of a dozen apps to measure light intensity with your phone. If you're over 10k lux at that size you're probably light burning them

 

[tomatoesarecooltoo]

This and it looks like the light is cooking them

Agree 100%

 

[Stugots]

I suggest starting them in a peat pellet at first (jiffy pellet) and then transitioning from there into a soil mixture without any extended release (which rules out miracle gro). If your pH is good, then just give them water at first. Nothing else. Once they start looking light, feed them something.

My guess is your pH is messed up and/or you are feeding a seedling too much (which is almost anything at first).

That monstrosity is the result of this exact method lol. I waited a little longer to transition it from the peat pellet to solo cup because I wanted to at LEAST see 1 little root trying to stick out of the net first, but nothing.

 

[Milson]

That monstrosity is the result of this exact method lol. I waited a little longer to transition it from the peat pellet to solo cup because I wanted to at LEAST see 1 little root trying to stick out of the net first, but nothing. View attachment 1063476

What is your pH? For when you water I mean.

They might be getting locked out.

 

[Stugots]

How close is the light?

Light is @ 28” ... the seedlings looked the least leggy when I have it around 26”... I’m going by what others have tried successfully on growdiaries/online with my TS1000 and a photo plant. I’ve started seedlings at 32” - 36” and the same thing happens, just a longer stem.

 

[Stugots]

What is your pH? For when you water I mean.

They might be getting locked out.

On this miracle grow one, I’ve been using distilled. Only watered twice since planting. 75ml both times. 2nd time I put a touch of unsulphered molasses just to change things up lol.

Not measuring ph this time around. It hasn’t made a difference thus far. Not that you can even measure distilled. ~5.7ph but it has no buffers. Same seedling result in semi-soiless (pro-mix hp) or MG with or without ph’ing my water prior.

 

[Milson]

If you are watering with water that has a pH between 6.5 and 7.2 and a ppm under 200 and they do that in peat pellets, then i am stumped. I would not blame the seeds. They are clearly trying like hell.

Just looks like lockout to me.

 

[MegaStoner420]

On this miracle grow one, I’ve been using distilled. Only watered twice since planting. 75ml both times. 2nd time I put a touch of unsulphered molasses just to change things up lol.

Not measuring ph this time around. It hasn’t made a difference thus far. Not that you can even measure distilled. ~5.7ph but it has no buffers. Same seedling result in semi-soiless (pro-mix hp) or MG with or without ph’ing my water prior.

DO NOT USE MIRACLE GROW, think of your stalk as a straw, it needs to be open to get the proper nutirents through out the plant. When you use miracle grow it closes that hole and it will NEVER open back up, it happened to me. Use unsulfered molasses.

 

[tomatoesarecooltoo]

Light is @ 28” ... the seedlings looked the least leggy when I have it around 26”... I’m going by what others have tried successfully on growdiaries/online with my TS1000 and a photo plant. I’ve started seedlings at 32” - 36” and the same thing happens, just a longer stem.

Ok that sounds reasonable, I would go back to the higher range just to be safe. Very weird.

 

[MegaStoner420]

Dont mean to divert anyone from your problem bro but i also need some help if anyone could find my thread. Its called straight confusion!!! I feel like its an emergency but it might not be. But honestly bro make sure if you PH keep it between 5.5 to 6.7, use molasses but dont feed any nutrients (including molasses) until your seedlings go into veg which is when they have 5 nodes or more like i said before. Keep the lights at the distance you already have them at. And if the pellets dont work try rockwool that's what i use and no problems so far. If you are using miracle and molasses it could be nutrient burn, but that usually stsrts at the tips of leaves. Having yellow tips. It could also be a difficiency or toxicity, depending on what it is you could use CAL-Mag+

 

[MegaStoner420]

And also, distilled water is good for germination but i really wouldnt recommend watering with it unless you are using reverse osmosis.

 

[Stugots]

If you are watering with water that has a pH between 6.5 and 7.2 and a ppm under 200 and they do that in peat pellets, then i am stumped. I would not blame the seeds. They are clearly trying like hell.

Just looks like lockout to me.

DO NOT USE MIRACLE GROW, think of your stalk as a straw, it needs to be open to get the proper nutirents through out the plant. When you use miracle grow it closes that hole and it will NEVER open back up, it happened to me. Use unsulfered molasses.

Out of about 40 seedlings I’ve killed now, I can assure you this is the 1 and only grown in MG. I’m at the point where I just want something, anything, to happen in that tent besides death.

This is why I was so sad to see the same result with MG lol

 

[MegaStoner420]

Out of about 40 seedlings I’ve killed now, I can assure you this is the 1 and only grown in MG. I’m at the point where I just want something, anything, to happen in that tent besides death.

This is why I was so sad to see the same result with MG lol

Odds are if the medium has nutes already in it and you give them nutes on top of it it could be nutrient burn but im leaning towards maybe a deficiency or toxicity, try using Cal-Mag.

 

[Stugots]

And also, distilled water is good for germination but i really wouldnt recommend watering with it unless you are using reverse osmosis.

I’ve tried 50/50 distilled/natural spring water. It would usually be around 100-150 ppm. Different variations of this as well. I have a bubbler to aerate the water I’d be feeding.

 

[MegaStoner420]

Only thing that i dont understand is if it is a deficiency or toxicity, why would a seedling get it? Lol