Spa balancers work to keep your hot tub’s water at the right levels. Your spa balancers are used to alter the pH and/or alkalinity of your hot tub's water. You need to use spa test strips to properly diagnose the condition of your spa water, and treat any imbalance with spa balancers such as: leisure time spa down, leisure time spa up, alkalinity down, and alkalinity up. Additionally, you can use a calcium booster in your spa’s water to help raise water hardness levels. At Hot Tub things we have a variety of hot tub balancers for you to choose from so you can find the perfect hot tub balancer for your spa.