Overwatering or something else?

[roflio]

Is this showing signs of overwatering or could it be something else? The leaves have been that way for about 3 days now with the curling leaves getting progressively worse every day. For good measure, I transplanted it into a larger pot just before taking the picture and admittedly there was quite a root ball in the previous smaller pot.

Curiously enough, I got another plant that is precisely the same age and strain, was in exactly same-size pot and has been watered just as much/often and that yet, doesn't show anywhere near the same symptoms.

 

[Easy7]

Looks like your soil has a lot of organic material and no verm or perlite. Just a tad under oxygenated.

 

[_tessarecting]

It just wants more oxygen, keep it dry between waterings it will recover

 

[MacGyverofgrow]

Yep all the clay in the soil holds water for a eternity and then the roots start suffocating. Then they will turn brown and die. 50/50 perilite and soil is a cheap easy way to go. U could try to araite the soil by diging a little and/or poking holes in the soi that might migt help until u get a better mixture going.