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All RAS relies on biofiltration to convert ammonia (NH 4 + and NH 3) excreted by the fish into nitrate. [4] Ammonia is a waste product of fish metabolism and high concentrations (>.02 mg/L) are toxic to most finfish. [5] Nitrifying bacteria are chemoautotrophs that convert ammonia into nitrite then nitrate.
Periodic removal of the algae that has grown inside of an algae scrubber removes nutrients (ammonia, nitrate, phosphate) from the aquarium water, thus providing the needed filtration. An algae scrubber is a water filtering device which uses light to grow algae ; in this process, undesirable chemicals are removed from the water. [ 1 ]
Aquarium filters are critical components of both freshwater and marine aquaria. [1] [2] [3] Aquarium filters remove physical and soluble chemical waste products from aquaria, simplifying maintenance. Furthermore, aquarium filters are necessary to support life as aquaria are relatively small, closed volumes of water compared to the natural ...
During the 1980s, Sera continued to broaden its offering with new lines of foods, vitamins, and technological products. Notably, the era featured the launch of the Sera Bio-Denitrator, the first device designed to biologically reduce nitrate levels in aquariums. [4] Sera products are sold in more than 80 countries. [citation needed] [5]
Protein skimming removes certain organic compounds, including proteins and amino acids found in food particles and fish waste, by using the polarity of the protein itself. . Due to their intrinsic charge, water-borne proteins are either repelled or attracted by the air–water interface and these molecules can be described as hydrophobic (such as fats or oils) or hydrophilic (such as salt ...
BBA may occur in both saltwater and freshwater aquaria. [16] Red spot algae may form a tenacious reddish-brown splotch or film on aquarium glass or plant leaves. It grows quickly and may be a symptom of high nitrates or iron. [17] These encrusting red algae may be referred to as a member of the genus Hildenbrandia. It is not especially common. [18]
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