That is cool. I have read mixed reviews on here, but most seem to say that you are better off candling with the light until the eggs are late, then do the water test before you do eggtopsy. I have only candled twice now. Once before we put them in and then again at 7 days. I will candle again on day 14 and then on day 18 and decide who makes the cut and who isn't developing and shouldn't go in the hatcher.
We have fainter does and I bred them to a nice buck before I sold him. I was really hoping that they took so that I could breed any does to the buck I have now and breed their momma's to him also. Makes it easier next year lol. I was checking on my only pregnant doe last year like every hour the closer she got and hubs convinced me to sleep through the night and that she wasn't going to have it that night. I listened to him, since he has been on the farm more than me and seen lots of cows born. Well turns out I missed it! I was not happy, but we did get an adorable little doeling so I was excited about that. Hoping for more girls this year, but if we get a nice buckling I may keep him to breed to that baby. I have gotten to the point were I really have to keep records. Good thing I found a really cool record keeping app.