Yes, you can. Regular potting soil is the same as succulent soil if you forget to water it regularly. You can still make fine pumice. However, it is less likely that it will be washed away by the next watering or blow away in the next storm. You won't notice any signs of root rot until too late. The cutting is more likely to take root if it has dried out fully and a callus has formed. The plant's yellow hue is caused by the sun. The Clanwilliam aloe has a unique and tall appearance. It is located north of Clanwilliam (South Africa), hence its name.