I think we all end with one eventually tucked in a corner somewhere. Maybe it was that tank you thought you needed to home fish for a period of time or maybe it was just a location that isn't easy to work with.
Whatever the reason, please feel free to share your sad tank. Give it some love today.
I was watching a tour and saw these two.... One was difficult to work on because of the access (too tall) and the other was a project that lost the male fish, likely due to a nutrient deficiency based on the comments by the author.