First off, just a thanks to pool professionals. We were lucky to have someone who really knew his stuff servicing our HOA pool for decades. Now that he has retired, we didn't fully realize how rare and valuable a good tech really is!
Since his retirement we have had a slew of 'pros' manage our HOA pool with disappointing results. It is a ~40k gallon in ground fiberglass with a separate ~500 gal spa each with its own heater and filter. Problem now is we have a ton of kids ( 30) using the pool after school and weekends. Service comes 3x/week and chemistry is out of whack. We are off the chart ( +100 cyanuric acid and high free chlorine) He says that is result of Dichlor and now manually adds liquid chlorine to manage pool and spa. We have purple staining on pool walls.
Pool guy wants to install a salt system stating that it would keep up with demand yet everything that I read says it is not the best option. Several have strongly suggested to use a pump with liquid chlorine. However it appears these pumps pump a fixed amount on a fixed schedule. I'm thinking that something that monitors the chemistry would be a better option. Like a Pentair Intellichem with Stenner pumps.
So my question to you pros is simply would a sensor based automation help us or is it more up the the tech learning the pool and usage. What do the high usage commercial pools use? Thank you in advance for all your thoughts.