I still have my original 38 gallon.
Never crashed, or really had a problem. One reason was that I did way more than the average amount of research before I got into it. Plus, everything was manual for the first few years....I did add an ATO after about a year, but I only added an automatic doser in the last year or so.
While I was doing my research for a saltwater tank, I had an entire freshwater "career" that ranged from the first 10 gallon tank to raising an Oscar to old age to keeping a DIY/Lo-tech planted tank . I had the aquariums and protein skimmer for about 8 years before I first set them up.
The only
major change was several years ago when a buddy gave me a classic 50 Breeder (3/8" glass, no-brace;
heavy), I added that onto the system and moved most of my big colonies there for an excellent grow-out.
The only major fiascos were one foul up on my part during dosing than caused a white-out (documented in another thread) and later on the mandatory switch to LED's (due to a drastic budget shift (that has yet to shift back)).
The white-out was a royal pain to clean up – it took months for things to even out, and I had a steady drain on Ca and alkalinity after that for another year...but didn't seem to do anything to the corals.
The switch to LED's was a disaster....toasted about 80% of my corals...thankfully only one or two "en total" (green and purple monti), the rest had frags survive....harvested about 15 gallons of bleached skeletons after it was said and done.
A lux meter would have made all the difference, but I hadn't figured all that out yet.

:mad:
(All that said, the whole system has been on the back burner for about 4 years (time flies)...I added that doser I mentioned to cope with the lack of time. It's been doing OK all things considered. I'm hoping the time factor for me is about to change.)