Use APKPure App
Get Hot Tub Water Balance old version APK for Android
Easily Balance your chemicals for Hot tub or Pool
App by www.repairhottub.com
With this easy formula, you just need to enter your current readings, and then apply the TIPs that this app gives. For example, based on your Hot tub total gallons and alkalinity, this app will suggest how many Table Spoons or CC of PH increaser or decreaser you should add to balance the water easily and efficiently.