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A fish tank [http://www.catalyst-commercial.co.uk/ go there], also referred to as a tank [http://www.catalyst-commercial.co.uk/ business utilities site], is really a tank, dish or other water-filled housing in which marine plants and animals - usually fish, and sometimes invertebrates, as well as amphibians, marine mammals and reptiles - are kept in captivity. Fish tanks are generally made of glass or high-strength plastic. <br /><br />Fish tanks were common in ancient Rome, Egypt, and Asia. Early Sumerians were recognized to hold wild-caught fish in pools, before preparing them for meals. In China, selective breeding of carp in to todays common koi and goldfish is thought to have started significantly more than 2000 years ago. The first tank for your fish to own been made of glass (dating to 1853) is on display in Regent's Park, London. <br /><br />Fresh or salt water is usually contained by fish tanks at tropical or cold weather. The characteristics and circumstances of the fish and other inhabitants help the manager to choose what sort of water or plants have to be in the tank. <br /><br />A careful aquarist always tries to steadfastly keep up a fish tank in a fashion that resembles its occupants natural environment. The water quality is vital, and this means preventing the inflow and outflow of nutritional elements. The maintenance of a fish tank also requires the careful regulation of air, and temperature, light, handling the waste made by tank inhabitants, appropriate variety selection, management of natural running, and good physical design. <br /><br />Aquarium keeping has become a favorite activity around the world. The fish tanks range in proportions from a simple dish housing just one fish to composite simulated ecosystems with watchfully engineered service programs. A typical home aquarium has a filtration system, an lighting system, air pumps, and a heater. Furthermore, some freshwater tanks (and most ocean tanks) use power heads to increase water blood circulation. <br /><br />Marine areas, several colleges, and wildlife profits frequently maintain saltwater fish tanks and huge freshwater for research and breeding purposes.<br /><br />[http://www.catalyst-commercial.co.uk/ business utility bills]