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.
Some breeders do daily water changes of 10% that takes less of a toll on the fish. With this method, the fry grow faster and bigger. Daily water changes also tend to level off the ammonia and pH readings avoiding the peaks and valleys. TEMPERATURE. Guppies like their tank water to be between 75-82 degrees F, with 78 degrees an ideal temperature.