reef custodians

[BlueAbyss]

IMO, you should consider snails livestock and try not to overdo it. They depend on algae growth to survive, so you don't want them starving to death.

I have an Emerald Crab and an unidentified nocturnal hitchhiker crab in my 5.5, and while I haven't outright noticed any issues with them (and have seen the hitchhiker eating algae) the growth rate of my zoas isn't very good.