I have very low humidity so It would be slightly different soil then you. You can google gritty mix and many of us you that with adjustments to what ingredients we can get. I use zeolite (non clumping happy cat litter), Small Grostone, pine bark, equal portions and a slight amount of core powder. There are a lot who use a non sand cactus mix with added perlite. The water needs to pour right through so the roots don't stay soggy. Kadie can also post what she uses so you can see what she uses.
