I own a plant server on discord and we often get a lot of brand new growers who join for troubleshooting and care advice, and since cacti and succulents are so fascinating and easily obtainable most of em show up with plants from walmart and the likes just potted up in compacted or soggy peat from every day watering- Pretty much sold to them on death row if they don't know how to do home-arrival care.
My mods and I find that explaining the details of soil mix additives and whatnot can be really overwhelming for people who've just bought their first plant and arrive like "This is my new son, I've had him for two hours and would give my life for him, how do I keep him alive"- You know the ones, impulse buys because the plant is pretty, even though they know n o t h i n g about plants. Anyway a lot of the times the most convenient option is to suggest a brand of pre-mixed succulent soil instead of going into the science of mixing adequate grit- Which is difficult, there's not a lot of pre mixed soils that meet our standards enough to recommend, but we have ONE brand that we hold above all others, and that would be Bonsai Jack's succulent and cacti soil, it's composed of 33% Pine Coir, 33% calcined clay and 33% Monto Clay, it's a little on the pricier end, but a little goes a long way and its reaaally good for making sure new growers don't struggle so much with rot.
I use it in my own cacti and succulent collection, as well as emulate it when I'm making my own mix, it's a really fantastic gritty mix because I live in a really swampy part of Texas where the humidity is always INSANE so its been the only thing that keeps my plants happy really- My server members and I pretty much deify Bonsai Jack, we'd have a shrine if we could lol
