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Ok so i have built my own cabinet incubator all insulated except the doors which i have windows in. Right now i have a self which has two fans in it the self does not extend all the way to the door so the fans are in the back so the air will circulate. I also have a humidifier in under the self. I have a temp/ humid controller. Fans on constantly it will come up to temp fast set point 101. The relay output turns off the heater but it over shoots by 2-3 deg and then drops to like 98.5 before the heater can recover and start heating up again. It does this up and down constantly cycling like every 6 min. Not sure if i need to reduce air flow or what. Any ideas?