I did a major update on my potting soil. I recently started talking to a fellow co-worker who is a cactus expert. He told me I needed to completely re-do my cacti potting mix. Previously I was using peat moss as a base, with lots of perlite and dolomitic lime. Now I'm using a small amount of peat moss, with a lot of lava sand, a good bit of green sand; and then some perlite, dolomitized lime, blood meal, and worm castings to top it off. Though the major is the lava sand. It is much more coarse and should drain a whole lot faster now without retaining it's water. I'm excited to see if there is improved growth this year! Here's a picture of the mothers: