I have a home built cooler incubator. My heat source is 2 light bulbs. I've been adjusting it to try to get the temperature right. My open air temperature ranges from 99.5 to 101. Starting at the low temp, the lights come on for 1 minute then kick off. The temp continues to climb slowly for 2 minutes and 30 seconds before reaching the high temp. The temp then slowly decreases for 2 minutes and 45 seconds until it reaches the low temp and the lights kick back on. So my cycle is from 99.5 to 101 in 3.5 minutes and from 101 back to 99.5 in 2 minutes 45 seconds. Is this sufficient for a successful hatch?