Usage Tips:Description Transparent Acrylic Aquarium Filter Boxes External Hanging Water Purifier for Aquarium Fish Tank Box Aquarium Accessories Features: High transparent acrylic material, brand and of high quality,. External design saves space inside the fish tank. There is a partition inside, which can separate the filter material in sections. Small body, large capacity, can be used with various filter materials. Multiple filtering effects make filtering more efficient. Equipped with a submersible pump, there is no need to purchase a separate submersible pump. The submersible pump has both CN plugs and EU plugs to choose from. You can choose according to your needs. Note: The filter balls in the picture are not included and need to be purchased separately. Specifications SizeTwo filter boxesThree filter boxes,Four filter boxes,Five filter boxesSix filter boxes Colortransparent Water pump power:5W Water pump Plug:CN Plug,EU Plug for your choice. Water pump voltage:220240V Note: Please allow 13cm differs due to manual measurement. Due to the different display and different light, the picture maybe a little different with the actual color of the item. Thanks for your understanding. Package included1 Set Two/Three/Four/Five/Six fish tank filter boxes with water pump