This is my first incubation. I bought some eggs on eBay. I was too cheap to crack one open to check for the blastoderm. Now on day 4, there is still no veining whatsoever in any of the eggs. (Was I just sent a bunch of supermarket eggs?) My temps have been consistent between a low of 98F at night and 101F during the day. Humidity is constant between 50-55%. I'm hand turning 4 -5 times daily. I also don't see a bacteria ring either. Everything is clear like the eggs from my refrigerator. At what point does it become dangerous to keep going, as in, I open the incubator and have eggs explode in my face? BTW, I'm using an LED (6 white LEDs) flashlight and toilet paper tube. This is enough light, correct? If you can see with a "candle".... Thanks for the advise.