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. Canāt see any stems in photo but they also turn purple. Fix by increasing temperature, decrease RH, increase ventilation, donāt water again till bone dry, Once dry resume watering at a reduced amount. If plant droops after watering itās 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 š»