Rendezvous Spa Specialties

| 106699A

Spa Increase for Spas and Hot Tubs, 16 Ounces

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Reg. $21.99 Save 23%
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Maintaining your spa or pool water to be crystal clear and squeaky clean can be tough with multiple things you need to keep an eye on. With the Rendevous Spa Specialties Spa Increase for Spas and Hot Tubs, you can keep your total alkaline and pH levels in check to keep your water balanced. Total alkalinity is a combination of the hydroxides, carbonates, and alkaline substances in your water. Alkaline acts as a buffer for pH, which means that it helps to keep the pH levels from drastically moving up or down the scale by absorbing major changes to the waters before it affects the pH. It's recommended that your spa water should be maintained between 80 to 120 parts per million (ppm) for total alkalinity and between 7.2 and 7.8 for pH. Alkaline levels that are below 80 ppm can result in cloudy green water. Since alkalinity and pH are closely connected, a low alkaline level results in rapid fluctuations in pH level, because the water can't counteract the effects of acids from rain or naturally occurring minerals as well. This can damage and erode the surface of your hot tub while corroding the metal parts. Not only will low alkaline and pH levels damage the body of your hot tub and have a negative effect on your waters, but it can also cause burning eyes and irritated skin. With this easy-to-use liquid mixture, you can keep your water safe and enjoy a great spa experience. To ensure the best performance of this balancer, make sure you never add it in when anyone is in the spa waters. Instead of adding it through the skimmer system, you should carefully distribute it by pouring it into the center of the spa with the circulation system running. If you're going to be putting more than 1 chemical into your water, allow for several minutes to pass by before adding the next one. And finally, make sure you store this balancer in a cool and dry location out of direct sunlight to keep the chemical properties intact. Tackle 2 of your biggest chemical headaches at once with the Spa Increase for Spas and Hot Tubs from Rendevous Spa Specialties to relax in your bubbling spa waters without a care in the world.


  • Gentle formula raises pH and total alkalinity levels
  • No pre-mixing required
  • Easy-to-use liquid
  • Makes for a great spa experience
  • Effective water balance control
  • Use in spas and hot tub water
  • Product type: Spa chemicals
  • Color: Gray
  • Dimensions (L x W x H): 2.45 x 2.45 x 8 inches
  • Weight: 16 ounces
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