Growing Living Stones at 63rd Parallel North

the temperature is + 23 °C. i am watering the conophytum pot which seems semi-dry, the argyroderma pot which seems quite dry and the lithops pot which seems quite dry. 22 of the monilaria seeds have sprouted and 9 of them are splitting (picture above), 11 + maybe a tiny one of the argyroderma have sprouted, 9 + maybe 2 tiny ones of the lithops and 2 + maybe a tiny one of the conophytum.

the temperature is + 24 °C. no other changes.

the temperature is + 24 °C. i am decreasing the amount of light that the plants receive. the light is now on 12 h a day. the moisture is ok in the closed containers. i soak the monilaria container with diluted cactus and succulent fertilizer. i am currently (by accident) watering the monilaria every 3 days. what i mean is that the container seems to stay moist for a couple of days after watering. 22 of the monilaria seeds have sprouted and 2 of them are splitting (pushing new leaves through the cotyledon), 9 of the argyroderma have sprouted, 9 of the lithops and 2 of the conophytum. many of the argyroderma have turned reddish. the intensity of the light might be too much for them.

the temperature is + 25 °C. the moisture is ok in the closed containers. i forgot to water the monilaria container. 21 of the monilaria seeds have sprouted, 9 of the argyroderma, 9 of the lithops and 2 of the conophytum.

the temperature is + 24 °C. the moisture is ok in all of the containers. 22 of the monilaria seeds have sprouted, 9 of the argyroderma, 8 of the lithops and 1 of the conophytum.

the temperature is + 25 °C. i am decreasing the amount of light that the plants receive. the moisture is ok in the closed containers. i soak the monilaria container with diluted cactus and succulent fertilizer. 22 of the monilaria seeds have sprouted, 8 of the argyroderma, 8 of the lithops and 1 of the conophytum.

the temperature is + 26 °C. the amount of light is the same as previously and the moisture ok so i don't need to water any of the containers. 22 of the monilaria seeds have sprouted, 8 of the argyroderma and 6 of the lithops and finally 1 of the conophytum seeds. i notice that the container with monilaria seeds has algae. it is the beginning of a worsening condition soon to be seen in every container. i am worried that later on when the conditions get dry the dying algae atracts mold which in turn could kill my plants. the other option is that the algae steals the nutrients and keeps the container far too wet so that the plants will rot. unfortunately transplanting my seedlings is not an option. pumice seems to be quite a comfortable medium for algae. it is dusty and porous. i don't know how other growers keep algae at bay.