Greetings everyone, so it's the first time I am trying to grow one of these guys and hes exhibiting some white (more like losing green color) patches that I was wondering what it could be. I got a cutting and I have put it in the pot with special cactus mix from a local shop ( they have done good by me so far). It's been in the dirt for about 2 weeks and I haven't watered it yet. Appreciate any advice :)