1) had a 10K liter intex pool full of exotic fish that all died when a giant goraimi holed the liner. pool fully drained and was mid knee deep in fish bodies when I walked into the shed. I was so devestated, I couldn't return for a week so you can imagine the smell and clean up effort by then. Terrible when you need a wheelbarrow to remove the dead.
2) Installed a 10 x 3 x 3 glass tank on oak cabinet into a very wealthy customers house. His house was huge with marble floors and a front door wide enough to drive the flat bed truck through. The back glass panel (19mm tempered glass) popped right off 10 hours after being filled. By then it was 4am. The water gushed out, hit the house wall which was only 15cm away which pushed the entire draining tank sliding away from the wall, hydroplaning on the smooth marble floor until the cabinet hit a low sofa on the other side of the room. The whole unit tipped over and fell onto the sofa traping the owners daughter who has fallen asleep watching her new tank. Luckily the high arm rests stopped her get getting crushed but they also trapped her for an hour of screaming until someone found her.
3) Helped a mate shift an 8x2x2 glass tank into his house. Only 2 of us but he wasn't experienced so I walked backwards and for some reason he urgently needed to put the tank down while we were halfway through the front door. He got his fingers caught, blood started flowing and I was trapped inside the house. i had to smash a window to get out, race around and lift the tank off his pile of bloody fingers while he was screaming the whole time. Stitches needed but he kept all fingers somehow.
4) Bought 3 rare fish in the hopes of breeding them. they were $6K each, unknown sexes and had to be shipped from the other side of the country. when they arrived, I discovered the only male had tried to turn in his fish bag and gotten stuck just above the water line. Fish bags should have been smaller or larger.