Yup.
2002 or so. Had a 240g wall divider system, kinda primitive by today's standards, perhaps, but it was wonderfully healthy... I could grow _anything_ in that tank. 2x 400w halides + VHO actinics, 6" southdown DSB, Precision Marine beckett injector skimmer... Loved that tank.
My father in law fell ill. Wife and I had 4 young daughters, and all of a sudden, I was basically on my own taking care of them. Wife spent as much time as she could with her father. Don't get me wrong, I'm grateful she had that time, but for 4 months, I totally ignored my tank. No time to deal with it.
Grape Caulerpa from the sump went sexual, spread to every rock in the tank.
Watermelon mushroom corals decided they _really_ liked the dirty water, and covered everything not already killed by the caulerpa. Including, incidentally, a 7" squamosa clam that I'd grown from about an inch long.
When I had the time to return to the tank, I was simply sick. I used 100 lbs of premium, wet shipped, gulf live rock to fill a ditch in my back yard. Broke down the entire system, sold it all off for pennies on the dollar, and was out of the hobby for over a decade.
This is the only photo of that system that survives, taken nearly two years before it crashed...