Large air sack is this normal?

Tracy the chick

Songster
8 Years
Aug 28, 2011
677
5
111
Uk
I candled my egg today after recieving my new brinsea candler lol. Its day 4 and the air sack looks really big like nearly have the egg! I also saw a little black dot in the middle of the egg what could that be? Im a first time hatcher after getting my brinsea bater off my husband for xmas
 

Tracy the chick

Songster
8 Years
Aug 28, 2011
677
5
111
Uk
Ive looked on line and its says too big air sack usually means my humidity is too low. Does this sound right? I dont know what my humidity is. Bater has 4 channels, the manual says fill 2 channels up with water and on day 18 fill the other 2 up also.
 

Tracy the chick

Songster
8 Years
Aug 28, 2011
677
5
111
Uk
Quote:Yep your right, phew! I looked at them candling pictures and mine was on there. Thanks for that i feel loads better now
 
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