Lately I have been hearing about using acid soil for Stapeliads and I'm definitely going to try that. My cactus soil is not acid at all so that will be a start. I also have plenty of orchid fertilizer and will try that too. I'm trying to get grocery store phals to rebloom. I just learned with them that they need 65-68ยบ to set buds. I don't know how I'll figure that one out!
Here is a Stapelia paniculata hybrid that I got from my Cactus Society meeting. It bloomed with no help from me!