My main mix for my cactus and succulents is around 85% coarse perlite and 15% Black Gold cactus mix.
Almost all my plants grow great in this mix. Maybe 3 or 4 that seem to not do the best in it, looking like they want a more water retention soil mix.
I've posted a lot of pictures around this forum and I think most would agree, that soil mix, for me works great.
What my soil looks like.
But, I'm a tinkerer.
Today I was going to buy some orchid bark to re-pot some African Violets this weekend.
I have not tried bark in any of my AV mixes before, but thought I would since I'm re-potting them.
A small bag of orchid bark $7.99, or a huge bag of pine bark mulch for $4.99.
I went with the $4.99 bag.
My thought is I will start to add a small amount of the bark to my cactus and succulent mix as I re-pot them....
I think I'll still have a 3/4 or fuller bag in 50 years.... LOL