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Easy installation (Display on the packing box)
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Press the on/off button, the water in aquarium will be pumped out automatically through a hose for changing water.
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Adjustable height by Three interchangeable pipes of 18cm, suitable for both shallow and deep aquarium
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With this tool, you can remove the dirt from the bottom of your aquarium.And you can exchange the water in the fish tank,too
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Linked accessories(Sand Washing Cover),you can clean the sand and stone at the bottom of the fish tank
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A strong pump easily removes particles from topmost layer of substrate without disturbing the bottom layer of gravel.