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Freshwater aquarium. A freshwater aquarium is a receptacle that holds one or more freshwater aquatic organisms for decorative, pet-keeping, or research purposes. Modern aquariums are most often made from transparent glass or acrylic glass. Typical inhabitants include fish, plants, amphibians, and invertebrates, such as snails and crustaceans.
Should be kept in acidic water which can be difficult to maintain for most beginners in the aquarium hobby. [51] 5 U.S. gallons (19 L) [51] 20–28 °C (68–82 °F) [51] 5-6 [51] Dwarf rasbora: Boraras maculatus: 2.5 cm (0.98 in) Phoenix rasbora: Boraras merah: 2 cm (0.79 in) Eyespot rasbora: Brevibora dorsiocellata: 3.5 cm (1.4 in) Kottelatia ...
pH can be measured using indicators, which change color depending on the pH of the solution they are in. By comparing the color of a test solution to a standard color chart, the pH can be estimated to the nearest whole number. For more precise measurements, the color can be measured using a colorimeter or spectrophotometer.
Tropical fish is a term commonly used to refer to fish that are kept in heated aquariums. Freshwater tropical fish are more commonly kept than saltwater tropical fish due to the common availability of fresh water sources, such as tap water, whereas salt water is not commonly available and has to be recreated by using fresh water with sea salt additions.
Marine aquarium. A marine aquarium is an aquarium that keeps marine plants and animals in a contained environment. Marine aquaria are further subdivided by hobbyists into fish only ( FO ), fish only with live rock ( FOWLR ), and reef aquaria. Fish only tanks often showcase large or aggressive marine fish species and generally rely on mechanical ...
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Requires a 30-gallon tank and 3 inches (7.6 cm) substrate. Tank should remain tightly lidded. May eat small shrimp. 10 cm (3.9 in) Blue dot jawfish: Opistognathus rosenblatti: Yes: 9 cm (3.5 in) Dusky jawfish: Opistognathus whitehurstii: Yes: Requires a 30-gallon tank and 3 inches (7.6 cm) sand substrate. Tank should remain tightly lidded. 14 ...
The first step of nitrification in the biofilter consumes alkalinity and lowers the pH of the system. [10] Keeping the pH in a suitable range (5.0-9.0 for freshwater systems) is crucial to maintain the health of both the fish and biofilter. pH is typically controlled by the addition of alkalinity in the form of lime (CaCO 3) or sodium hydroxide ...
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