I can't seem to find a bright enough flashlight to see whats going on with my eggs! I'm on day 7 of incubation and I used a really bright 24 led light and can't see any blood vessels or anything. One egg has a few cracks and a huge airspace so I thinik I will throw it out. I did candle a fresh egg which looked real clear, and these ones are fairly dark near the yolk. Are they alive? Am I wasting my time? I'll try something brighter soon! Just thought I'd ask some knowledgable chicken lovers for suggestions and advice.