They’re currently in a 1 gallon plastic cookie jar. It works very well for me because the terracotta pot fits very well in here and I didn’t have to transfer them to a different nursery tank after hatching.
You can see in the video, the clowns are swimming in circles. This is because I have a flash light shinning directly at them and they don’t like it. Ambient lighting only! And the bubbling is just a tad too fast in this video.