Instructions
Check the size of your aquarium. Freshwater aquarium filters are sized according to the number of gallons in the tank. It is often a good idea to purchase a filter designed for a larger tank than the one you own. This will allow the filter to work more efficiently and decrease the strain on the parts.
Decide whether you prefer a filter that sits inside the tank or outside. It is generally easier to change the filter cartridges on an external filter, but keeping the filter inside the tank allows you to hide it with plants and other decorations, giving you a more natural look and feel.
Compare the flow rates on the various aquarium filters available at the pet store. The higher the flow rate the more efficient the filter will be and the more contaminants it can remove.
Ask other aquarium hobbyists for their recommendations. Experienced hobbyists generally have found filters that work better for them.
Check the price of the replacement filter cartridges for the filters you are considering. The price and availability of replacement cartridges is an important consideration when choosing a filter.
Read the instructions on the filter box to determine how easy it is to set up the filter and change the filter cartridges. Choose the filter that best meets your needs.
How to Select the Best Fresh Water Aquarium Filters
No matter what the size of your tank or what type of fish you plan to keep, the right aquarium filter is essential. To be effective, the filter you choose must effectively remove solid contaminants and uneaten food from the water. A good filter should also be easy to clean and maintain, and it should provide the biological filtration you need to keep the water quality high and your fish healthy and happy.