Candling questions

[loopy12]

Ok, I've been browsing the sticky on candling (ok, not browsing, reading and rereading multiple times a day in excitement)
I have some questions:

I set my eggs 8am on saturday morning, but it took until 4pm for the temperature to come up to 99+ degrees. Should I count from when the temperature got up, or from the moment they went in? I'm thinking I should count from the afternoon, making that day 0 not day 1 and today being day 2 or now being 54 hours (for purposes of comparing to the sticky's photos)

I had a bit of a peek at a few eggs just now, hoping to see a blood island thingy. Couldn't see anything except a round shadow - the yolk? If I had looked at day 0 would they have just looked clear or would I have seen the shadow I can see now at day 2? In other words is the shadow I see now progress? In the candling pictures I don't see the shadow at day 0, but there is at 52 hours - ?

So I'm thinking in the next two days I might see the beginning of veining. Do I turn the egg around until I find it, or is it visable from any angle?

One egg I just looked at had a bubble that moved as I moved the egg - I'm thinking thats not good, right? Didn't see it in the others (I only peeked at 4 out of the 34 as I don't think there's much to see yet - just excited!)

Sorry if they're stupid questions! I'm a bit jittery as have been having problems keeping the temperatures stable and am scared of losing the whole lot!

 

[hinkjc]

On day 0, I'd say the shadow you're seeing is the yolk. You won't see any signs of life until they have started incubating at least a full 24 hours. However, with tinted eggs, even that is almost impossible. On white eggs you can see positive veining within about 4-5 days of incubation. Brown and blue eggs, 7-10 days. Green eggs, good luck. lol This is also variable with shell thickness.

 

[lexgold]

the moving bubble could just be the air sac right?
I'm new to this too, and almost made a newbie mistake this week. After seven days I moved some doubtful eggs off to one side. Rechecked them today at 11 days and one was a huge healthy embryo! Don't be in a hurry to chuck them!!!!

 

[loopy12]

I was thinking the bubble might be a ruptured air sac - ? (They were shipped)
It moves like a bubble in a spirit level - if I twist the egg the bubble bobs up to the top. Don't think thats a good sign - didn't see it in the other 3.
I'm in no hurry to remove bad ones - will wait until day 10 to do my official candling of them all - was just peeking at a sample...

A bit of googling, and I found that the shadow is the yolk is more defined after 24-48 hours in a developing egg, sometimes with a lump at the top of the shadow that is where the embryo will develop, so thats good

So exciting!!!