Right there with you believe me. I think it's just part of the challenge. Truly, it's a psychological gauntlet trying to keep these things alive and happy without going crazy ourselves lol. I think that's how I've really changed or improved the most over the years. I am able to "handle" these quirks better, as opposed to stoping or preventing them. Still, extremely gratifying when things are going well though.
Same for me, and despite the investment in the coral is to see an animal dying in front of you without knowing the reason why it dies is the most frustrating for me.