The one u like dont get a moon cactus yet I will tell u how to care for it if u ask

I would go with a Mammillaria species. Easy to care for, flowers really good, and will do well in your area.

Stoney

I would say that your succulent mix would be ok for cacti as well. Check out any feed stores nearby and look for poultry grit, sometimes called cherry stone. It can be used just like the lava rock, but is already in small pieces.

Nancy

Thanks Stoney. I will see what I can find.

And Nancy - you may have just changed my world!!! When I repotted everything recently I had to sit outside in the hot sun for hours hammering lava rock into small pieces!

-Deva