It looks it in the picture.. but in a 24 hour period? On pots that never had any white? None.. until they were all moved inside and i watered it had small amount of dawn and hydrogen peroxide in it.. and boom in the after noon next day a mushroom when i hadnt had them in a month or so outside and the one that got the mushroom had been inside never close to the others and it was that night.. i hate i had to bring them in before i could repot.. clean the pots.. if i can.. and its only on clay..not seeing on plastic but the white.. its different .. bumpy and i get horribly scratcjy in thebthroat and ears everything and i hadnt had that issue until yesterday when it all popped up again.. and last time the mushrooms didnt show up til they were outside.. quickly too..
but i was wondering .. what kind of white powdery mold grows on tgose big smooth rocks you can put in the trays with water to provide humidity? Im sure theres several types but i realized a while back my plant inthe tray got that all nasty stuff all over it in the water and rocks and smelled awful