1944 - Universal adult suffrage introduced; new constitution providing for a popularly-elected House of Representatives promulgated. 1958 - Jamaica becomes a member of the British-sponsored Federation of the West Indies. 1961 - Jamaica withdraws from the Federation of the West Indies.
Guppies prefer a hard water aquarium with a temperature between 25.5Â° and 27.8 Â°C and salt levels equivalent to one tablespoon per 19 litres.In fact, they can withstand levels of salinity up to 150% that of normal seawater.uppies prefer a hard water aquarium with a temperature between 25.5Â° and 27.8 Â°C and salt levels equivalent to one tablespoon per 19 litres.
By Rozlyn Rozberry Submitted On June 21, 2010. There really is no proper temperature that will apply to all freshwater aquarium setups; it is all dictated by the needs of your aquatic animals. However, a typical range for tropical freshwater setups will be somewhere in the vicinity of 72-82 degrees Fahrenheit.