Sorry for the dumb question. Lockdown is suppose to be for the final 3 days, why then do you start it on the 18th day? (18, 19, 20, and 21, isn't this 4 days?) Is that because they can start hatching on the 20th day My eggs are on the 16th day. Do I start lock down at the beginning of the 18th day or anytime of that day.