Cactus / Ariocarpus seedings

The flowering season of Astrophytum has not been in here yet but I now can feel a hint of spring when I was in my backyard.
It is the time of sowing cactus seeds and repotting young seedlings and so I spend quite busy time.
I have completed 1 year old Astrophytum seedlings and have commenced to repot Ariocarpus seedlings.
The photo is 1 year old Ariocarpus seedlnings repotted in this morning.
Top row (3 pots-75 seedlings): A. bravoanus v hintonii
Bottom row (3 pots-75 seedlings): A. retusus v jermilae