Transplanting Lithops in pumice substrate (video)

I was transplanting some Lithops today and thought I'd better catch it on video because I always receive questions about how to dig holes in pumice. The answer is you don't. You fill the container with dry pumice stones up to the brim, make sure the tip of the root is in and then wiggle a stick to make the stone collapse and pull the plant down by the root while slightly pushing from above. You don't have to be afraid to damage the roots. If you followed the rule to transplant dry-to-dry it'll all be fine. The pot in this video is 5x5cm small but you can get up to 16 young seedlings in it using this method. No need to dig holes or use the common cacti transplanting method by laying the plants on the side. Anyway, I find it quite easy and fast :)
(Sorry the video is not good..)