alternatives to pumice?
Hello, I have been growing cacti and succulents for about 20 years with varied success. Never paid much attention to the soil. I am trying my darndest to start using a proper potting soil for my cactus, but cannot find some of the things people recommend, especially pumice. I have not found anything like pumice. There is no Dry Stall a the stores with horse stuff. I could probably find aquarium rocks but doesn't seem quite the same. I do have perlite, vermiculite, a wide variety of compost, and pea gravel. I have plenty of clay pots that I could break up, but a lot of work.
Any other ideas what I could use instead of pumice for the drainage material? If there a certain brand of cat litter that would be good?