I'll also cast my vote for trochus snails. All I have in my tank are trochus snails to eat algae, and nassarius snails to root through the substrate. I ended up moving my hermit crabs out of my tank, so my clean-up crew is just snails.
When I upgrade, I might add a bicolour blenny to my tank, too. All I have otherwise are two clownfish and a couple shrimp.
________
Michigan Marijuana Dispensaries