Okay so I am getting 30 chicks on wed. I have the brooder mostly set up. It's a pumpkin box. Few things I'm grabbing today. But I saw a chart that said .5 square feet per bird. So I measured and I am only at 12.5 square feet. I am getting two more pumpkin boxes on the weekend that were gonna be my "add ons" as they grew. If I add another pumpkin box now that is 25 square feet of space for 30 birds. I don't mind doing it but is there such a thing as too much space? I only have one heat lamp as well so I would have to get another one? Thanks so much.