Undergavel Aquarium Filters
These simple filters are straight forward to maintain. They are powered by an air pump or a power head. Undergravel filter plates are buried with only the air lifts above the gravel This mkes the gravel the filter medium.
The key to getting the best from such filters is to use at least two inches of gravel over the base plates. This allows for ample biological filtration to be created amongst the gravel.
Where To Use An Undergravel Filter
Since these filters sit under the gravel making them a good choice as a second filter method. If you want to boost the cleanliness of your fish's water an undergravel filter will add to the overall biological cleaning capacity of the tank system.
Alternately they are also used as stand alone filters by some fish keepers. An undergravel filter is capable of sustaining a modest fish density when sufficient gravel is used.
Maintenance For These Filters
Gravel should be periodically vacuumed to keep the flow of water constant. Gravel vacuums work using a siphon and are ideal for this purpose.
Undergravel Aquarium Filter For Sale
The following are undergravel aquarium filters for sale from eBay sellers.
