Astraea sp. snails (often referred to as Astrea snails) range in diameter from about the size of a nickel to almost the size of a quarter. These snails will consume film and hair algae on the glass and rocks in your aquarium.
Florida Cerith snails range in size from an inch to 2''. These snails will consume diatoms, detritus, cyano and algae in the substrate as well as on rocks, and glass in your aquarium.
Rock Boring Urchins come in different colors, consume complex algae, including calcified algae. They have sharp spines, which can give you a sting comparable to a bee sting if the spine pierces your skin.
Lettuce sea slugs, (Elysia crispata), consume hair algae and other semi-complex macroalgae. However, sea slugs have particular care requirements that make them unsuitable for most reef tanks. Please read the full description.
Excellent scavenger and sand stirrer. These snails will come out whenever they smell food, or when you are feeding the fish. These snails do not eat algae; they eat detritus and leftover fish food. There feeding will help maintain your nitrate levels, and clean some of the debris that is building up in your substrate.
The Ninja Star snail ranges in size from a about the size of a nickel to just larger than the diameter of a quarter. These snails will consume film and hair algae on the glass and rocks in your aquarium.
The Pencil Urchin, is a multicolored urchin with dull spines, and is a great addition to a touch tank. This particular urchin will be most active at night, as it is a nocturnal creature. It can grow to 3 inches in diameter .
The Polka Dot Hermit crab will eat hair algae and scavenge in your aquarium. It has a large white claw that it uses to close the shell it is in when it is retracted, giving the appearance there is a snail inside.
The Ragged Sea Hare, can grow to about five inches long and is pretty large at adulthood. Good at certain types of hair algae, film algae, and even some cyano like the Lyngbya spp.
The Reticulated Brittle Starfish is small starfish with long arms. Their central disc grows to about the size Lincoln is on the penny, while their arms can reach out 6 inches. A scavenger that will feed primarily at night and hide throughout the day.
Eats Diatoms, Algae and Detritus on the rocks and glass in your tank. Extremely hardy under normal water conditions. This smaller snail only grows to about 2/5-3/5 of an inch.