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Raise both the pH and alkalinity in your Master Spa with Spa Ease pH/Alkalinity up.

Lower both the pH and alkalinity in your spa with Spa Ease pH/Alkalinity down

At Master Spa Parts, we carry the Master Spas® Legend® Series Topside Controller Decal to replace controller overlays from the late 1990s and early 2000s. This Standard Series Overlay features beautiful graphics and will stand up to years of constant heat and humidity.

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.

SpaBoss Ultra Spa is the simple and easy product to keep your hot tub water conditioned and your skin soft and smelling fresh. This product works with all sanitizers and hot tub chemicals and contains borates to clarify your spa water.

The ModStep 2XL is the only step in the industry that offers a wide landing platform that is safe and attractive. The large 24” x 35” top platform includes a non-slip, rubber tread to prevent slipping. Built with a powder-coated aluminum frame and polymer treads, the ModStep 2XL is the sturdiest, safest and strongest two-tier step on the market. The easy to attach handrail helps ensure the spa user is able to safely and easily enter and exit their spa. 

Introducing the hassle-free 8' x 12' Axis Swim Spa Cover designed specifically for H2X Trainer 12 Spas. Crafted with cutting-edge rolling technology, this energy-efficient cover ensures effortless operation, making it easier than ever to take on and off your swim spa cover. Available in dark gray Midnight. 

The 8' x 18' Axis Swim Spa Cover for H2X Trainer 18 + Michael Phelps Signature Spas is a hassle-free cover for your swim spa! Made with high-tech rolling technology, this energy-efficient cover is straightforward to operate, and makes taking on and off your swim spa cover easier than ever. Available in dark gray Midnight. 

The 8' x 15' Axis Swim Spa Cover for the H2X Trainer 15 Spas is a hassle-free cover for your swim spa! Made with high-tech rolling technology, this energy-efficient cover is effortless to operate, and it makes taking on and off your swim spa cover easier than ever. Available in dark gray Midnight. 

Introducing the hassle-free 8' x 14' Axis Swim Spa Cover designed specifically for H2X Crosstrainer 14 Spas. Engineered with rolling technology, this energy-efficient cover offers effortless operation, making it easier than ever to take on and off your swim spa cover. Available in dark gray Midnight. 

The 8' x 11' Axis Swim Spa Cover for your H2X Therapool Spas is a hassle-free cover for your swim spa! Made with great rolling technology, this energy-efficient cover is extremely easy to operate, and it makes taking on and off your swim spa cover easier than ever. Available in dark gray Midnight. 

The 8' x 17' Axis Swim Spa Cover is a hassle-free cover for your Michael Phelps swim spa! Made with high-tech rolling technology, this energy-efficient cover is effortless to operate, and it makes taking on and off your swim spa cover easier than ever. Available in dark gray Midnight.