Eggs due to hatch between the 6th and 8th August. 5 have hatched.. today I did the float test in the remaining 10 eggs. 2 sank so they have been removed and 8 are back in the incubator as they floated so assume still alive.. how reliable is the float test. I'm sure I can see some of the eggs wobble in the bator but not sure if it's my eyes playing tricks on me.. should I make a safety hole to see if that encourages pipping? They are 4-5 days over due.