Abstract: An aquarium system for all-around viewing has a tank enclosure formed by optically transparent sides and a bottom plane, a sunken chamber below the tank for circulating water from and into the tank by a water circulation pump, water circulation outlet and inlet risers for circulating water flow from the tank into the sunken chamber and back into the tank, and a base on which the tank and sunken chamber are seated for containing electrical components for the aquarium system. The sunken chamber may be immersed within an outer pool of water to give the appearance of the tank enclosure floating on water. The base may hold various electrical and mechanical components for microclimate simulation, including magnetic induction drive for the water circulation pump and other motorized components; water spray pump to simulate rain; cooling pad; heating pad; temperature sensors; audio speakers; lighting controller; fog dispenser; and microprocessor for programmed control of desired microclimate simulations.