Saltwater Aquarium Filters are used to process waste and impurities to maintain water quality and keep your tank inhabitants in a healthly condition. There are numerous types of fish tank filters, each a little different and used in different applications.
Undergravel Filters- Placed underneath your gravel or sand and rely on either an air pump or powerhead to function and suited for aquariums with a light fish load. (continued below)....
Wet/Dry or Trickle Filters- Water is pumped from the aquarium and then run though a drip/trickle plate and through a biological material source contained in the wet/dry filter chamber.
Power Filters- They are designed to work on the majority of aquarium set-ups and provide quality results and very easy to use and hang off the back of the aquarium which makes maintenance very simple.
Canister Filters- They are very versatile as they are able to serve many purposes within your tank. They can act as stand alone filter or be used in combination with other types of filtration as well. They serve as a biological, chemical, and mechanical filter in an aquarium with plenty of fish.