Filtration, Part 4 - Under gravel filters and fluidized bed filters
It is a filter gravel as a biological function, but also large foreign body can naturally also be taken into substrate. In this type of filtering the water through the substrate is mounted on the bottom of the tank via an air bridge or power head, forced by an airlift. To ensure that the filter works properly, the aquarium, in general, instead of gravel on a perforated surface. The filter current is caused by bacteria, which colonize the surface of the executedevery pebble of sand or corn. The smaller the particles, to resolve the surface for bacteria. An under gravel filter should not use large gravel. If you move between the various cars and air power is selected, you should keep in mind that an unwanted flow in a very fast under gravel filter.
Under gravel filter is cheap, but difficult to clean, especially for inexperienced aquarists. If a lot of debrisstuck in the gravel, will seriously impede the filtration. You can reduce the risk by putting a sponge in water consumption. In this way the water is mechanically filtered before it is forced through the filter gravel. Remember to regularly clean the sponge.
Another way is to avoid clogging, the so-called "reverse flow under gravel filter" deal. While this type of filtration is a head of power used to carry water through the gravel. Under gravel filterare more often found in freshwater aquarium, but they are fish only marine aquarium, even if the aquarium is heavily populated. An aquarium usually need stronger forms of filtration compared to the gravel filter, because the reef inhabitants tend to be extremely sensitive to poor water quality.
Leach fluid
The fluidized bed filters are often used in aquariums planted. Unlike many other types of filters, they will not release carbon dioxide from the water.This filter is similar to that under gravel filter, but there are grains of sand instead of gravel. Both the under gravel filter bed and fluid filters are biological filters, bacterial colonization need to work, since small particles of sand and gravel as we have more space for bacteria in a fluidized bed filter to settle the bets.
Another difference is in the filter through the gravel bed filter and fluid, later, a more compact andhas a strong circulation pump. In the fluidized bed filter of sand around quite violently and fell because the water is highly aerated. This in turn will provide the bacteria with a lot of precious oxygen. This means a strong flow of water that these filters get clogged often, and not spend too much time on maintenance. If constipation occurs, must be solved immediately, because oxygen-free fluid bed filter is not healthy forAquarium.
There are different types of fluid bed filters ready to choose from, and you can even make your own filters. This filter can be placed in the aquarium or hung outside the aquarium as a filter. If you make your bed filter fluid, you should keep in mind that we must work to pump water very strong.
