crack

My 100 gal has a 3" crack at the bottom front about 12" from the left side! I'm freakin' out. I'm emptying 40 breeder to put all the fish into! My OH MY. How did this happen????? The tank doesn't move. There are no children in my house. What am I gonna do???

OK- Yesterday one of my 20H's got a pressure crack:angry3:, when I got home from work all but a 1/2 inch of water was gone, heater burned up, but my 3 week old angel fry survived so far. My nefew works for ServPro, so he came over and we pulled up the carpet, trashed the padding and 2 industral...