This video instructs pool operators in Florida on when there is a need to operate an upper base solution feeder with a Tri-chlor erosion feeder on a public commercial swimming pool.
We recently had his group of students that brought the LaMotte water link spin touch lab to the recent certified pool operator course hosted by space Coast pool school in New Port Richey Florida in September 2019. Check out how it works and how the results are shown. Know this is an expensive way of testing but is very accurate and gives all the results on your digital screen at one time.
This is a very typical set up of a Florida commercial pool salt chlorine generator with ORP controller and back up chlorine and acid system to kick in when the salt chlorine generator cannot keep up with the chemical demand in the pool.