I am the Aquatic Coordinator at a collegiate fitness center with two indoor pools and I have worked here for around 6 months. Maintaining proper chemical levels has been easy, but in many ways I am still learning the ins and outs of how these pools truly operate. My signature contains the specs for my pools.
I manually test the chemicals twice a day (Taylor K-2005), but our chlorine and acid are regulated through an automatic feeder Chemtrol machine. The acid is pumped from a 65 gallon tank that is diluted with a 5:1 water-acid ratio. I have recently noticed that we seem to be going through a lot more acid than we have in the past. In the beginning, dropping the tank 7 gallons from one day to the next seemed to be pretty standard. Lately, there have been numerous days where the tank is dropping 15 gallons overnight. The PH has steadily remained between 7.5-7.6 without hardly any change. Alkalinity in both pools is about 90-100. I am having to re-fill this tank twice a week and just feel like I should be using significantly less acid. Any suggestions?