So I used to have lots of snails. I even had Trochus spawn and breed. Now, they all seem to die quite quickly. All types, Cerith, Astrea, Trochus, and Turbos. Turbos seem to last a bit longer though. Snails do ok in the fuge, so I am pretty sure it is one of: 1) Large brittle stars. 2) Mystery Wrasse 3) Cuban Hogfish Interestingly, my brittle stars are pretty much always hiding now as well, where before 2+3, they used to be out quite a bit. Any thoughts on what could clean up film algae, and yet be wrasse-safe? Also, acrylic and reef safe.