That's exactly how I've been adding water! And I carefully positioned the sponge in a location well within range of the long plastic straw that I've been using.
I use bendy straws, linked together.
24 new babies that got moved to brooder.
Have another 21 out. Had 3 zipped but dead.
So 48 have hatched so far.
My wellies are holding out none of those yes
Beautiful! Sorry you lost a few....