Bottom leaves of my Calathea have started to yellow within the last week (since its last water). I’m not sure how to precent this.
Waiting for answer
They're the oldest leaves aging off. Don't worry just prune them off.
Also look into the difference between overwatered and underwatered. Plans that are under watered. Have yellow wings starting at the tip of the leaf versus overwatered starts from the beginning of the leaf down to the tip.