Hatching now
And they are hatching at this minute!
Something that I've never realized before; the eggs don't hatch by themselves, like chickens.
Mother has decided that it's time, so she picks up a number of eggs in her mouth, chews a bit (gently, I hope) and spits the wrigglers into a nearby shallow pit. I guess she recycles the shells.
Father is still not permitted nearby.
gmh asks ' How do you acidify your change water?'. I just add some Seachem acid buffer and some alkali buffer to bring the change water down to neutral or so.