So we decided to incubate some eggs for a science project. Silly me thought it would be easy.... anyhow we are on day 6? yesterday i candled for the 2nd time a couple that worried me... and decided to take them out. as i have read that bad eggs can explode and what not... well i also was curious and cracked one open.... it was for sure fertile but i couldnt see any veins during candling... so i might have killed an embryo... anyone else have this happen?? i had 12 eggs now 11. and honestly only see veins in 1... but since there was an embryo in the one from last night i wonder if i just cant see veins??? please help thanks !!