What do you recommend for a clean up crew?Updated 2 years ago

One turbo snail per 1-2 gallons & one hermit crab per 5-10 gallons will help keep your tank algae free.  You may want to look for more non-aggressive hermit crab species (Clibanarius tricolor, Calcinus elegans) and hardier snail species that are more capable of flipping themselves (Tectus fenestratus, Trochus sp.).  A few Mexican turbo snails and Conchs can also be good additions to the reef aquarium.  Keep in mind hermit crabs can eat your snails for their shells so it's best to have much more snails than hermits or provide the crabs with empty shells.