Overwhelming problem two new plants

[iveweed]

The bigger one is an autoflowering and it's almost 40 days old, the tiny one is a feminized and it's around 9 days old.
Many seeds were sprouted in the soaked paper towel but only these 2 out of 9 were survived after planting.

They grow in a pre-made soil for cannabis growing already fertilized.
Bigger one gets around 400ppfd
Tiny one gets around 220ppfd by an HPS bulb light 250 W.
They get 16h of light per day(I know I need 18h at least but I can't turn the light on for 18h straight right now).
I water them every time their soil is dried deeply(1 inch).
Temperature is around 32/31 degrees with 40% temperature (yeah not completely ok but they shouldn't be stuck like that).
Fan is turned on all the time along with the light.
I can't afford any A/C or stuff like this.

What's wrong with it?

P.s: the soil in the pics is just dry because I wanted to take pics before watering.

 

[bullfrog13]

might be too much fertiliser in the soil and at the same time your running high vpd which means the plant wants to transpire alot and it cant so its struggling
just a thought

 

[iveweed]

might be too much fertiliser in the soil and at the same time your running high vpd which means the plant wants to transpire alot and it cant so its struggling
just a thought

Is that an issue so big to make them to stuck completely?

 

[HerbalEdu]

hps is way too close for seedling.

put the light 70cm from soil ...

 

[bullfrog13]

Is that an issue so big to make them to stuck completely?

can be. Its obvioulsy struggling from something. the heat and low humidity is pretty intense for such a young plant. if it cant drink and transpire water its not gonna grow

 

[bullfrog13]

have you been watering it properly and allowing it to dry in between ?

 

[m8ty]

Solo Cups to start seeds and put that light as high as you can get it ..

 

[HerbalEdu]

i have been growing with a 250w hps for years, just switched to led recently

16/8 is fine, i m also running 16/8 in veg for photoperiods and automatics.

i start my plant with the HPS 70cm (2,3') from soil and don't move the HPS until the plant grow to 30cm from the lamp then i start moving the HPS upward keeping a 30cm distance from plant tops.

the 40days old one is definetely stunt for some reasons ...

 

[HerbalEdu]

just to give you an order of comparaison that's what my plants looked like day 39 since sprouted out of soil with the HPS 250W.

 

[iveweed]

Thanks to everyone for helping me.
The young one is about 60cm distant from the bulb light. No one have never really understood why my plants are so stunted and stuck, really I don't know either.
The only way I can fix it in an affordable way is take a bigger fan.

 

[HerbalEdu]

any more detail about the pre-made soil ?

 

[iveweed]

any more detail about the pre-made soil ?

It's called: Light Mix and consists of perlite and sphagnum., pH 5.6-6.3,NPK fertilizer (12/14/24)

 

[iveweed]

have you been watering it properly and allowing it to dry in between ?

I do. I water all around the plant (not directly) after checking the dried soil up.

 

[HerbalEdu]

never watered with a larger amount and moisted the whole soil in the pot ?, roots won't grow if the soil is too dry, could be your issue if your just watering small amount around the plants since the beggining.

 

[HerbalEdu]

you need some cups under your pots to be able to water until you see a little run off that the soil will usually suck back within 15minute to 2 hours after watering once the plants are big enough and/or when the soil get a little too dry and took some time to remoist.

you will never be able to water properly if you keep your pots top of carton boxes like that

 

[iveweed]

N

never watered with a larger amount and moisted the whole soil in the pot ?, roots won't grow if the soil is too dry, could be your issue if your just watering small amount around the plants since the beggining.

Never watered the whole pot only around but near the plant like many yt videos I have watched on yt by growers.

 

[iveweed]

you need some cups under your pots to be able to water until you see a little run off that the soil will usually suck back within 15minute to 2 hours after watering once the plants are big enough and/or when the soil get a little too dry and took some time to remoist.

you will never be able to water properly if you keep your pots top of carton boxes like that

Seeing my setting how am I suppose to do that?

 

[HerbalEdu]

roots expand faster than you think, i usually moist the whole soil with the first watering so the roots will always find water as they grow. then i water with smaller amount but still large once a week for like 4 to 5 weeks

 

[HerbalEdu]

Seeing my setting how am I suppose to do that?

you need to find something to put under your pots so you can water and have a little run off inside the cup.

 

[HerbalEdu]

Amazon.com : plant saucer

any plant saucer the right size or alike will do the job