Since I read that a simple cardboard box is ok , I feel much better now, about that big box I have standing by, ready to make my first brooder out of! But I do have a few questions..... Is a 2x4 x 18'' high cardboard box going to be big enough for 25 chicks?? I plan on dividing the box in half when they are real tiny.....then expand the space each week, as they grow bigger. ( I learned this from BYC ) We bought a 125w brooder lightbulb to heat the brooder. Bought 2 of them, in case one burns out. Another tip learned here. I need to know if this is ok...or should we be using one of the 'red' bulbs?? I see both types on the post pictures and wondered ....what is the difference and which is best? My chicks wont arrive till April 2 ...so I have time to make changes if I need to. Thanks in advance for all the help!!!