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Spa heaters, automated systems, lights, and salt-water chlorinators all depend on a functional circuit board. With Master Spas®' MS50 U PC board, you can bring back the functionality of your spa or hot tub. Get this MS50 PCB fast and free from the Master Spa Parts warehouse when you order from our online store.

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.

The Black Legend Small Waterfall Pillow is made to go with the Master Spa Legend Series Hot Tubs (2003-2004).

This is a replacement Ozone Nut for the Ozone bypass flange wall fitting. This is one element to the hoses and various fittings of your home spa. This replacement piece has a SKU number of X243020 and is sold by Master Spa Parts. This piece is compatible with a variety of models of Healthy Living Hot Tubs, Michael Phelps Hot Tubs and Swim Spas and several of the Twilight Series Spas.

Measure the chemical balance of your chlorine based water with AquaChek TruTest Chlorine Test Strips in 15 seconds.

• Count: 50 test strips
• Tests for: Total Bromine, pH, Total Alkalinity

Measure the chemical balance of your bromine based water with AquaChek TruTest Bromine Test Strips in 15 seconds.

• Count: 50 test strips
• Tests for: Total Bromine, pH, Total Alkalinity

The Master Spa® Factory OEM 78" x 78" (6.5') replacement hot tub cover (SKU: X457878) is specifically designed to fit your Master Spas® hot tub. This replacement custom hot tub cover ensures energy efficiency as it consists of a 1.5lb foam density, 6 inch thick foam insulation that tapers to 4 inch, full length heat seal cushions that help prevent heat loss, and upgraded black rubber handles.

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SpaBoss Prevent II is used to get rid of staining and scaling in your hot tub and prevents it from building up in the first place. This liquid is a concentrated and multi-purpose stain and scale treatment that is easy to add to any hot tub.

This is the Lock Clip replacement part for your Master Spas Hot Tub Cover. This replacement piece is made of sturdy plastic and helps to keep your hot tub secure. Furthermore, it aids in preventing wind damage to the cover. This replacement piece has a SKU number of X900103 and is sold through Master Spa Parts.

The Charcoal Wrap Around Pillow is designed to be a generic alternative to the brand name pillow that came with one of a few Down East spas from Master Spas.

Several years ago, the manufacturer of Down East Spas discontinued this customer-favorite line of spas and hot tubs. Fortunately, Master Spa Parts still has a variety of spa parts to keep your spa or hot tub up and running. The 1-inch Air Control (Grey) is a quality replacement part for many of the 1999 series of Down East Spas hot tubs and spas.

The Master Spa® Factory OEM 6.5' x 6.5' replacement hot tub cover (SKU: X454065)is specifically designed to fit your Master Spas® hot tub. This replacement custom hot tub cover ensures energy efficiency as it consists of a 1.5lb foam density, 6 inch thick foam insulation that tapers to 4 inch, full length heat seal cushions that help prevent heat loss, and two upgraded black rubber handles.