Plant symptoms

Hey... so does anyone have a clue to what is happening with these plants. (Not much change in how it looks overall, but it’s better to be cautious) any and all tips and advice are welcomed

1) this first plant has leaves that look like it’s kinda drying out.. more of curling in a way.


2)


3) the stem of the plant is changing into a dark color.. kinda like a reddish purple

4) the leaves of this plant are curling inward.. I also noticed this on maybe two more of my plants

That first pic is probly just from overwatering. NBD But maybe it’s time to go to larger containers if you can. If you find yourself watering more often than you used to and the roots have reached the edge it’s probably time to pot up. The purpling of the stems is normal and likely genetic. The leaf curl, aka taco-ing, is likely from heat. Could have been in a hot spot under lighting or maybe it is a bit too warm in the grow area but usually an indicator you need better circulation/ventilation. Airflow would help get those stems fatter too. Get an oscillating fan on them if possible; keep them dancing.