Same thing happened to be last hatched, and since I helped them I ended up with an 100% survival rate. Felt good knowing I saved them and they're doing great.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
The float test doesn't really show you if there is a viable chick inside. Candle the egg to see if there is movement. Then wiggle the egg around lightly to see if you hear peeping. But at day 23 you're getting to the end, another day and you have the risk of an exploding egg.