Whirlpools are characterised getting jets to the side of the bath about midway up in conjunction with a suction point (similar several colander) at one of the bottom four corners. This type of system produces hydro-massage by sucking water from the bath and pumping it outside the jets on the side under work. To increase the pressure for this jets most whirlpools possess a control on top of the bath which allows air regarding sucked in to the jet of water. Reading reviews will also help locate...