Trees without irrigation can live 40 to 50 years. Watered trees have dry, split fruit and develop fatal root rot. Raising the soil 8-12 inches is advised to insure drainage. Citrus in pots is possible, but again, be miserly about water. Root rot comes very suddenly and can kill your tree in less than two weeks.
Citrus is very fussy for proper food.
Because soil conditions in Florida are generally poor and because citrus is not tropical, proper fertilization is a must for good health and good fruit production. This product feeds the leaves with much needed elements such as iron, boron, manganese, etc. Poor leaves on citrus are common as most people do not apply minor elements, but all commercial groves do, two, sometimes 3x per year. Some citrus require special conditions. For example, the Key Lime is extremely cold sensitive and grows only in South Florida.