last week i was going to swith my S/W tank from a 29 to a 60 Gallon tank, first i drained all the water into buckets, put the fish in one bucket, rocks in others, i put my 60 gallon in the same spot, put in my sand, live rock water and fish. but there was only 29 gallons of water in it, i filled it to about 50 gallons, then it happened, THE FISH OWNERS WORST NIGHMARE!!! the bottom of the tank BROKE. i was rushing to keep the water from hitting the carpet, get out my fish, and rocks all at the same time! i thought i saved alot of water, until i put it into my 29, it was only like 10 gallons!i had to put my fish into it with no filter and little waterover night, so i could clean up my floor. The next day the water was all filmy on the top i had to take out 5 gallons to remove the film, put it back in my room on the stand, refilled it and now a week later, NO CASUALTYS, im so glad, i just wanted to share my NIGHTMARE with you guys, ill be happy to answer any questions!!