How old do pullets have to be to lay hatchable eggs

[PurpleChicken]

We now have three 18-19 week old pullets laying on a daily
basis. We also have 4 roos, 1 RIR, 1 Cali White & 2 silkies that are all
over my girls. When can I throw some of the eggs in an incubator?

Thanks!!!

 

[speckledhen]

As long as they arent too tiny, sure you can hatch them.

 

[PurpleChicken]

They are around 70% the size of a store egg.

Mine on right.

Any preferences on incubators? I was going to buy this one:
http://www.dblrsupply.com/store/littlegiant/littlegiant.html
2nd package - $166 - Seems nice

Thanks so much!!!

 

[silkiechicken]

Second package? So you want a separate hatcher and incubator. Sounds like a plan. You can always try hatching the smaller eggs but personally I would wait till the eggs are at least 90% of full size. This will also give the girls a chance to get the egg thing right too so that they are popping the right things into the eggs and the shells are solid.