Hi all I am in the process of building my first home made incubator and have a question. Should your fans be on full time or just when the heat kicks in? I'm thinking of adding it to the next incubator contest. I'm very proud of it. I used a old oak TV stand I got at a garage sale and some old hardwood flooring my wife got from work and so far she is looking really good. I also purchased a digital thermostat & lighted red glowing LED computer fans from EBay to add to it to set it off. I think it's going to turn out really sweet.