Hi there,

I'll just throw in my two cents worth of advice.

Your cactus soil and perlite will be just fine for your new sans. Just drop down to a three or four inch pot.

I repotted it -- in the nick of time! The root system was vainly trying to penetrate about 2" of densely compacted clay-ey mud, the bottom sides of the pot had the beginnings of fungus, and I found a freaking EARTHWORM in that mess. (I let him go into the backyard, so he can aerate the soil there -- maybe he saved the sans!) These plants must have the most cast-iron constitution ever, to be able to propagate in that. I gave the whole plant a really careful rinse and once-over, and miraculously there was only one tiny piece of root that needed to be trimmed off (looked like it had died from sitting in perched water). No signs of mold or creepy-crawlies.

Here's a pic of the sans in her new lodgings -- the blue glass things are just there to keep the perlite from blowing out of the pot if I turn the fan on :)

it really looks happy in that cute little pot! Maybe you'll have some pups this time next year.