So I have a bunch of slate caves throughout my 45. I had tilted them up orginally, so they were ledges with 90% of the rock under sand, but the fish slowly turned them into caves. I completely forgot their digging would change how the sand supported the caves over time. Thus, it happened over the holidays while I was too busy to notice. One thing led to another and all the squished fish destroyed my water quality and that killed my other fish. Now I'm left here feeling like an idiot.
Moral of the story: Don't forget to reenforce caves your fish dig under slate.

Moral of the story: Don't forget to reenforce caves your fish dig under slate.
