Float Test for Fertilized Eggs

[ChristyBloom]

I just did the float test on a few questionable eggs at 18 days before I do lock down. THEN... I read where the float test is a bad idea. This is my first experience with an incubator and I was trying to avoid an exploding egg. Has anyone ever done a float test and the egg survives? One person said that if you do it, you'll be lucky if the chick survives.

 

[Cecisflock]

I've only seen it done to see if an egg is rotten for eating, that doesn't seem like a good idea

 

[ChristyBloom]

Pipping has begun and the first three to pip are ones that I dunked but I have a question. How do you determine if a chick can break thru the membrane or not? Started pip at 9 last night. Getting nervous humidity has been 70-74%. When I look closer, I do see a tiny tear