Busted tank, I just read another forum about someone waking up to a busted tank and lost his arowana. I would not want to go through his ordeal, that truly sucks....
Yeah tank busting for sure. It happened to me and it was horrible. Along with like a few days later in another tank of baby catfish the heater tripped over night and killed all of them
I would say a crack'd or busted tank would b at da top of the list and ich last cause it can b treated on the other hand a busted tank would cost a lot of damage not 2 mention possible death of all your stock.
busted tank for sure, especially when not home. loss of fish, water damage through house, possible fire/electrical hazards from water (we have indoor cats also)
Just tank, fish and water damage to furniture/kitchen cupboards and carpets alone would cost many thousands, and that's not counting possible damage to walls and flooring, and if the water went up the hall to the other rooms instead of just the more open kitchen/dining/lounge there are computers and all sorts of interesting and expensive items