Growing Living Stones at 63rd Parallel North

i bottom watered and fertilized all of the containers on the 21st and 28th. i sprayed the containers with water on the 11th and 25th and i watered regularly from the top on the 14th. i also changed the light and now the plant lamps are on 11 hours a day.  my living stones turned 2 months old on the 28th of october!

i bottom water all of the containers properly and check my living stones. i see 19 monilaria, 6 conophytum, 8 lithops and 2 argyroderma. the argyroderma seem to have lost about 80 % of the originally germinated ones. the lithops have lost about 40 %, the monilaria about 13 % and the conophytum are still germinating.

the temperature is + 23 °C and the grow lights are on for 12 hours. i bottom water all of the containers properly but forget to fertilize. i see that the last one of the monilaria has also begun growing its "ears".