Ocean Snow provides an excellent means of supplying both organic and inorganic nutrients to filter feeding invertebrates of all types.
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Classic Penn-Plax Action-Air Ornament
This aquarium ornament by Penn Plax is a treasure diver that adds real underwater movement to your tank.
Simple to install, these ornaments will require an appropriately sized air pump and control valve (not included).
7.5 x 5 x 4cm