2/5/2024 0 Comments Undergrave instal![]() ![]() ![]() There is a space beneath the platform into which water flows after passing through the gravel. The undergravel filter consists of a raised platform on which the gravel is placed and through which the water is drawn. This process, known as the nitrogen cycle, is essential to maintaining proper water quality. Because the grains of gravel offer such a large total surface area, a large population of the bacteria can be supported, thus providing efficient nitrification. Nitrate is relatively non-toxic to fish and can be used as a nutrient by aquatic plants or removed from the aquarium by water changes. In a well-established aquarium, the surface of each particle of this gravel is inhabited by bacteria that metabolize nitrogen-bearing compounds present in the water, converting those compounds that are toxic to fish into forms that are less toxic - ammonia into nitrite, and then nitrite into nitrate. Undergravel filters work by drawing aquarium water down through the layer of gravel at the bottom of the aquarium. Proper setup and maintenance are, in fact, required for these filters to operate effectively over the long term. Because they are hidden from view and perform their task without fuss, they can easily be ignored or neglected. These fish tank filters provide an effective means of minimizing ammonia and nitrite levels in aquarium water, and are simple and inexpensive to install. Undergravel filters, long used in marine aquariums, have enjoyed a surge in popularity in freshwater aquariums in the past decade as the importance of the nitrogen cycle has become apparent. ![]()
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