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.
The 2 inch Pump Split Nut is used as a replacement for the pump union that would need to be re-plumbed. You can cut off the old pump union and replace with this split nut. This comes with the 2 screws that screw and hold it together.