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sand bed filter

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  • Deep sand bed — A deep sand bed is[1] a filtration method used in some saltwater aquariums. A deep sand bed, similar to the Berlin Method, is designed to cultivate anaerobic bacteria in the bottom layers of sand, converting nitrate to nitrogen gas to remove… …   Wikipedia

  • Deep Sand Bed — Die Hammerkoralle (Euphyllia paraancora). Großpolypige, langsam wachsende Steinkorallen können in Deep Sand Bed Aquarien gewaltige Größen erreichen. Das Deep Sand Bed (DSB) oder Tiefsandbett Methode bezeichnet eine Methode, mit der Riffaquarien… …   Deutsch Wikipedia

  • Filter bed — Filter Fil ter, n. [F. filtre, the same word as feutre felt, LL. filtrum, feltrum, felt, fulled wool, this being used for straining liquors. See {Feuter}.] Any porous substance, as cloth, paper, sand, or charcoal, through which water or other… …   The Collaborative International Dictionary of English

  • Filter — Fil ter, n. [F. filtre, the same word as feutre felt, LL. filtrum, feltrum, felt, fulled wool, this being used for straining liquors. See {Feuter}.] Any porous substance, as cloth, paper, sand, or charcoal, through which water or other liquid may …   The Collaborative International Dictionary of English

  • Filter gallery — Filter Fil ter, n. [F. filtre, the same word as feutre felt, LL. filtrum, feltrum, felt, fulled wool, this being used for straining liquors. See {Feuter}.] Any porous substance, as cloth, paper, sand, or charcoal, through which water or other… …   The Collaborative International Dictionary of English

  • Filter (aquarium) — Aquarium filters are critical components of both freshwater and marine aquaria.cite book |last=Riehl |first=Rüdiger. Editor. |coauthors=Baensch, HA |title=Aquarium Atlas |year=1996. 5th Edn. |publisher=Tetra Press |location=Germany |isbn=3 88244… …   Wikipedia

  • filter bed — n. a tank, covered trench, etc. with a sand or gravel bottom, used to filter water, sewage, etc …   English World dictionary

  • filter — n. & v. n. 1 a porous device for removing impurities or solid particles from a liquid or gas passed through it. 2 = filter tip. 3 a screen or attachment for absorbing or modifying light, X rays, etc. 4 a device for suppressing electrical or sound …   Useful english dictionary

  • filter bed — fil′ter bed n. civ a pond or tank having a false bottom covered with sand and serving to filter river or pond waters • Etymology: 1870–75 …   From formal English to slang

  • filter bed — /ˈfɪltə bɛd/ (say filtuh bed) noun a layer of sand, gravel, charcoal, etc., in a pond, tank, or container, which serves to filter impurities out of the water which flows through it …  

  • filter bed — noun filter consisting of a layer of sand or gravel for filtering water • Hypernyms: ↑filter …   Useful english dictionary

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