To candle I use a big square flashlight and use the pump screw on cap that fits the big mustard or ketchup containers.
The hole in the middle of the screw on part is where the pump part goes thru into the gallon container.
The hole in the middle is perfect size for eggs.
I had been using a dark cloth around the cap to block light and allow light to come thru the hole only, but I'm thinking I may cut a circle (the same size as cap) out of black construction paper and tape it to the cap so I don't have to hold the cloth around the edges.
Works really well.
I put eggs in before noon on the 10th, I candled Sunday night and saw little chick shadows jumping around.
I'm counting the 10th as day 1 so that would put me at day15 now.
WISH ME LUCK!!