Newbie with questions regarding Al's gritty mix
I usually grow daylilys and sedum but I picked up the bug for Sempervivums. In doing so I ran into a couple of references to Al's gritty mix and i was blown away. What I haven't found is a description of what each element of the gritty mix provides to the plant. I want to try this out on some of my more "prolific" sedum cuttings first then migrate some of the Semps I just got to the mix. I am unable to locate any Turface so I am using Kitty litter that is 100% DE. I am also using aquarium gravel since I am unable to find grit or quartz. I would love for Al to speak to any common substitutes for some of the ingredients and to ask if anyone else has experience growing sedums and semps in the gritty mix. Also below is a picture of my ingredients assembled. Thanks in advance for any suggestions and or comments.