We currently have eggs set to hatch on two different days. The first batch goes into lockdown Wednesday afternoon. We built a separate hatcher for the first batch, to use while the second batch finishes incubating. Our incubator has a fan, and has been kept at 99.5, but the hatcher does not have a fan. So, my question is this; do we keep the 99.5 temp in the hatcher with no fan since that is the temp the eggs are used to, or do we use 102' because there is no fan? Would the change in temp hurt the eggs? The homemade hatcher has been up and running all day to test it, and we are able to maintain the temp quite well at either 99.5 or 102. Humidity is staying good also, at 65-68%. Glad I thought of this now, instead of on Wednesday!