With the temperature fluctuation going on in New England I am going to go buy a plug in dimmer for my heat lamp. I had raised the lamp Tuesday now they are a week old. Then the temperature dropped and the brooder got colder than I wanted it. So I had to lower the lamp again. It isn't easy. I have it hooked on chain hanging from the ceiling. In this thread someone had stated they use a dimmer to adjust the temp. It's a brilliant idea.