Yellow leaves , grows very slowly  6 weeks from seed

[guest9222]

Ph water 6-6.8
Light 600 watt led
humid 50 -60
Temp 24 - 30 celsius
today i started to feed them with sensi grow :
Part A – NPK 3-0-0
Sensi Grow Part B – NPK 1-2-6
B-52 N-P-K: 2-1-4
i used half of recomandation
When I watering after 1, 2 days pots are still heavy( first pic)
my soil it's organic ..ph 5 -6.5.. idw npk ..
I made holes for a good drainage
Looks like nitrogen defficiency or overwatered?
If soil was the problem why my others plants wasn't affected?
They was all together, but today I separated, conditions was same with healthy one's
Please advice !
Cordially and respectfully, George !

 

[Farmbuck]

How much water are you feeding them ? I had a similar problem but mine were underwater.

 

[guest9222]

I think they were underwatered and then I overwatered ... 1 liter per 11l pot

 

[Farmbuck]

Ok then let it dry first and use less the next time cuz I believe you are using a 3 gallons pot. I'm I correct ?

 

[Tedtheclown]

My 3 gal pots only take about 600ml before i get a good runoff, and they stay moist for about 2 days. Then i water em again. Might be too much watering and loosing nutes? Do you see the drainage?

 

[SoOrbudgal]

I'd have them off the floor to begin with and on risers. I don't care if it's wood or cement airflow under those pots.

 

[guest9222]

Hmmm ..what do you think??

 

[CaptainWiese91]

Just my point ! No air is coming in for the roots

 

[CaptainWiese91]

You don’t want a saucer under there or what ?? Or the water is just going to drop in the floor ?

 

[SoOrbudgal]

Much better allows for airflow. Now i would bring those to a tub if those were mine cause you can water&feed till those pots feel 10xheavier then let them dry i mean till they feel like less than 1 lb of weight probley 5 days till next watering. The soil medium needs to be fully moistened. Temps need to be 75-83f max when lights are on. Don't put fan directly on them have the air flow above the canopy. Still need NPK.