-Real motion air-driven ornaments provide entertaining action while aerating your tank.
-Diver floats while the treasure chest opens & closes revealing the treasure inside.
-Each ornament is made from a durable plastic resin that is safe for your aquarium. It  also can provide places for nitrifying bacteria.
-Requires air pump & 3/16" tubing (not included). Pressure control valve recommended. Use  your pressure control valve (not included) to adjust the motion and the volume of air.
 Fun to watch and entertaining for you & your fish.
 
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