Very new to growing. I recieved these plants 4 weeks ago and transferred them to larger pots and used a potting soil. They have since tripled in size and have been very healthy up until this point.
The last couple days these spots appeared and are getting worse. Any ideas on what deficiency this could be?
I have been using regular tap water and wondering if it has made the soil acidic?
Thank you for helping out a newb in advance!