I got back a few days ago, and took the above photos of larvae in the leftmost (aerated, unheated) tank. There were a few post-larvae and quite a few late-stage larvae.
The middle tank (heated, unaerated) had no larvae at all.
The rightmost tank (aerated, heated) had some larvae, but at a younger state:
None of the tanks were a smashing success — the mortality rate seems very high, maybe around 70%. I’ll know more about that when I scoop out the post-larvae next week.