Artificial red plastic water wheel and sky blue e resin dolphin decor, with an air tube embellishment. With fish tank action, bubble air can flow out from the air tube, thus to activate the waterwheel and help increase the dissolved oxygen level in water.This ornament comes with a built-in outlet that allows you to attach an air pipe to the bottom of the ornament and trap air within the ornament lid. Once the lid is full, it will spring open and release the bubbles from the ornament which will drift to the top of your tank.
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Artificial red plastic water wheel and sky blue e resin dolphin decor, with an air tube embellishment. With fish tank action, bubble air can flow out from the air tube, thus to activate the waterwheel and help increase the dissolved oxygen level in water.This ornament comes with a built-in outlet that allows you to attach an air pipe to the bottom of the ornament and trap air within the ornament lid. Once the lid is full, it will spring open and release the bubbles from the ornament which will drift to the top of your tank.