Just hatched mine this morning. I would have gone nuts if there was another animal with that timer and then ended up getting that other animal!
There's no way they really expect a lot of people to be able to successfully breed an Aquatter in just a few days. Especially considering that there are a year's worth of threads where people complain about not getting the zodiac animal because they couldn't breed something in time...
I used Chilly Goat and Crystal Unicorn. Good luck!