Not too long ago, my tank crashed- it now only hosts my fish, some inverts, and some bulletproof corals like xenia and mushrooms. The rock is coated with bubble algae and the bubble algae is grown over with cyano. I lost all my stony corals, so needless to say I'm feeling discouraged. This morning when I fed my fish, I found several polyclad worms eating leftover food. At this point, I think I'm ready to start over, but I have no clue how I'd even do so. Polyclad eggs could be anywhere, and reusing the rock and the sand could reintroduce the bubble algae or the polyclad worms, which would be a nightmare. Is treating the rock/sand even an option? Is it even worth it? Any advice at all would be greatly appreciated- I am totally lost in how/if to continue or to just give up on this tank.