How to Put Together a Fish Tank Water Filter


A fish tank water filter keeps your aquarium water clean and oxygenated. You can set up large or small fish tanks by changing the size of your water filter, but regardless of size, you need to properly put together the fish tank water filter in order to keep things running smoothly.

Things You'll Need

  • Fish tank
  • Filter and pump
  • Charcoal bag or filter mesh replacements
  • Extension cord

Use the filter mesh for a small pump. Pull off the top of the pump and cut the mesh into a thin strip large enough to fit tight. Fold it in half and place it in the pump. Replace the top of the pump, place it in the water and plug it in.

Us a charcoal bag in addition to the filter mesh for larger filters, where the water pours out over the top of the pump. Place the charcoal bag and the filter in the top of the pump, and use the plastic clips to suspend the filter and charcoal bag.

Pour enough water in the pump to fill it to the top. The pump should be hanging off the edge of the tank, at the top of the water level. The plastic tube portion of the pump should be 3/4 in the water in order to draw the water up into the filter. The tube is attached to the front corner of the pump, and should face in toward the water, not touching the tank glass.

Plug the pump in and the water should begin pouring over the edge of the pump.

Tips & Warnings

  • Change filters often to keep your tank clean.
  • Be careful with electric pumps around water. Always unplug them when cleaning.

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