why do urchins need murky water

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why do urchins need murky water

Sea urchins have mixed reviews in the saltwater aquarium scene. Some people love them because they are fascinating to watch and make outstanding algae eaters. Others find them difficult to care for ...

Murky Water by YellowKandy on DeviantArt

Why Is My Aquarium Water Murky: Quick Fixes And Causes - Aquarium Tales