Weird new mold. What do?

[firstcropp]

Hi all,
I just moved my pots into a tent and noticed this on some of the pots. What caused this mold and what can I do to stop it?
Thanks!

 

[Caliverner]

Take that top layer off kick back on watering

 

[BurnzyBurnz]

View attachment 4693653

Hi all,
I just moved my pots into a tent and noticed this on some of the pots. What caused this mold and what can I do to stop it?
Thanks!

Ease off on watering and watch the humidity in your tent. Also scrape that top layer of soil n' mold off completely.