So Steve-O and I were sitting in the office yesterday, working diligently as usual... (Steve: Kat, I'm bored. Kat: Shh, don't bother me, I'm chatting on TONMO. Steve: But I'm bored. Kat: Well, I'm hungry. Steve: Let's get out of here.) ... when I gradually became aware of a noise about evey 30 seconds, that sounded like someone tapping a snail against the glass in one of our invertebrate tanks. I went over to investigate the ones behind me (a rectangular glass one, ~60L, and a tall hexagonal acrylic one, ~200L) but couldn't figure out what was going on. So Steve came over to have a look, and we realized a puddle was forming slowly around the base of our 1.5m tall soon-to-be octo tank, which we were given by an aquarium that didn't need it at the time. Then we realized that the tapping sound was the acrylic seam that runs up the back of the tank slowly bowing outwards and GIVING WAY. 'Oh my,' we observed. 'Goodness gracious.' (Or something similarly expressive). With visions of 200L of suddenly liberated seawater infiltrating the office, elevator shaft and four floors below, we began calmly siphoning water from the tank into buckets. Steve heightened the moment by starting the siphon on the bottom of the tank, obtaining a chewy mouthful of invertebrate by-product in the process. Half an hour later, catastrophe was safely averted (as long as the buckets hold) and we are now on the search for a new octo tank. Shudder to think what would have happened if the seam had burst, say, over a weekend... So, anyone else want to share similar experiences?