Brown/Black spots on my coral cactus!
I just got this cactus for Valentine's and I love it! I really don't wanna lose it so I'm hoping I caught whatever the problem is soon enough. I've never had plants before that were all mine to take care of so this and my Dieffenbachia are my first. I'm thinking it is sunburned or overwatered. I've only watered it once since I got it but I did start spraying water around the area a few times a day to raise humidity since I don't have a tray (only did it for two days when I noticed the spots). I removed the glued rocks the day after I got it but it was kept in a more shaded area in the store. Please let me know how to fix it! :)