successful artificial hatching of eggs

hi together,

my first attempt to hatch eggs artificially was successful.
to hatch them, I took an artemia sieve with a polystyrene frame.
so could the artemia sieve swimming at the water surface.

in total there were 37 eggs, but only four hatched.
here you can see some eggs:

i've lost the other eggs in a fungal infection.

after 25 days the shrimplets hatched.

i have started the experiment, the eggs were just four days old.
they come from a dead black bee (caridina cf. cantonensis).