Can this plant be saved?

[jack.green]

Hello,
I live in Costa Rica, and am working with the soil and nutrients that are locally available, but I think the soil is quite porous and does not retain much water, anything over 250 ml just drains out of the 3 gallon pot.
This is a closet grow, the lights are a 100w full spectrum and I keep 20 hours of light and 4 hours of darkness to this Afghan Kush Autoflower. Bought seeds from a Spanish website called Ganesh Grow, they were just under $3 per seed.
Humidity in my area ranges between 60%-90% and temperature between 22-30 Celsius.
The following picture is a 35 day old plant, but as you can see it’s stunted. The leaves are curling up in a peculiar way, does anyone know what does this mean?
Thanks!

 

[Creeperpark]

Hello,
I live in Costa Rica, and am working with the soil and nutrients that are locally available, but I think the soil is quite porous and does not retain much water, anything over 250 ml just drains out of the 3 gallon pot.
This is a closet grow, the lights are a 100w full spectrum and I keep 20 hours of light and 4 hours of darkness to this Afghan Kush Autoflower. Bought seeds from a Spanish website called Ganesh Grow, they were just under $3 per seed.
Humidity in my area ranges between 60%-90% and temperature between 22-30 Celsius.
The following picture is a 35 day old plant, but as you can see it’s stunted. The leaves are curling up in a peculiar way, does anyone know what does this mean?
Thanks!

Try putting a drain tray on the bottom to help soak up more water from the bottom. Use the same 250 ml water but put it in the drain tray to be soaked up from the bottom. Be careful not to over-water and cut the oxygen off from the roots.