Yellow tips and curled down leaves

Hey Vexar, looks to me like it has been overwatered a bit. Leaves look stiff/ribbed/droopy from being water logged and get deficiencies from not being able to transport macro/micro nutrients due to lack of oxygen at the roots. Can’t see any stems in photo but they also turn purple. Fix by increasing temperature, decrease RH, increase ventilation, don’t water again till bone dry, Once dry resume watering at a reduced amount. If plant droops after watering it’s too much, small plants prefer being watered more often with smaller water volumes and bigger plants prefer heavy waterings less often. Hope this is helpful. Cheers 🍻

If you just given it calmag, give it a but if time to adjust, it may foods the issue all together. You should notice differences in hours to few days. I think it's a cal issue, hope that helps.