grow box problem?

So I built a new grow box out of a green plastic 18 gallon storage box. It has 4 cfl lights hanging from the top that I put on the box. today when I opened it a few minutes ago the box is so hot inside it has condensation on the inside of the box, on the walls and top. Is this bad? Is it too hot?

do you have any fans in there to control heat? like a passive intake and small exhaust fan to blow all the hot air out?

1 little fan but its just circulating the air is not blowing the hot air out of the box...

What's an passive intake?

Use a PC fans for intake and outtake and use light traps. But if your gonna do that make a "Real" box.

What constitutes a ”real” grow box? And what are light traps?