So I'm setting up a brooder for my 7 chicks we're getting on Friday, but I'm having trouble with the lamp. It's a standard 250 watt heat lamp and I have no idea how far I'm supposed to put it and how I'm supposed to keep it that way. Our cardboard box is 4x2.5 and we are making a cool area and a warm area so we don't have to raise the lamp every week. I have nothing in the garage to hang it from...and I can't figure out how to put the clip on, LOL. Help!