If your types of hot tubs aren't already underneath the roof of your patio or deck, then you'll want a cover to place over it. This will keep leaves, sticks, bugs, and other debris out of the water when you're not using it. It's a no-brainer, as it will keep the water clean...
In a reaction turbine, forces driving the rotor are achieved by the reaction of an accelerating water flow in the runner while the pressure drops. The reaction principle can be observed in a rotary lawn sprinkler where the emerging jet drives the rotor in the opposite direction. Due to the ...