SpaBoss Cal-Rise is the easiest way to increase calcium hardness levels in your hot tub water. Protect your spa or hot tub and the many working parts within the plumbing and heating system by keeping the water chemistry correctly balanced at all times.
This is the H2X Shaft Pin with SKU number X400130 and is one element that goes with the Blade Prop Kit. The H2X Shaft pin is a prop shaft pin and is a component of the wave propulsion.
SpaBoss pH Plus easily raises pH levels in spas and hot tubs that are too low below the recommended safe range of 7.2 to 7.6. If levels are too low, your hot tub water can become acidic and other nasty side effects can happen.