Stussyhat actually I never lost interest in the tank. Three times my water company added chemicals to prevent corrosion in the pipes, most of that is zinc orthophosphate and if I change my water just as they add that, it kills everything.and that is where some of the disasters happened.
The first time I didn't even have resins or a RO unit. I just used carbon. Thats whi I changed to RO/DI water. The second and third time I did have those things but that chemical just exhausts my resins and I guess enough gets through my RO to kill the corals.
Once I was away due to a family emergency (my Mother ended up dying) but some of the fish were in a seperate tank because I was re aquascaping and stirring up the gravel. When I do that every few years I remove some rock and fish.
I had to leave for a couple of days and something must have died in that spaer tank with no filtration. I lost a 18 year old cusk eel, 5 year old moorish Idol and numerous other old fish.
These things happen if you keep a tank long enough. 3 or 4 accidents in 40 years is not that bad. I try to plan for all things that could go wrong but I am not perfect and things happen. It is all part of the hobby.
Have a great Day
Paul