Spa Alkalinity Control

Many people experience issues with spa alkalinity going low due to aeration and automated acid feed. Here is how to solve the problem of low total alkalinity. Depending on water volume and acid concentration use the following Set Points and relay on/off times. On If pH>7.6 or 7.7 On Time: 00:00:06 up to 00:00:08 MinTimeOff:00:00:45…

Continue Reading →