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I was busy over the weekend and also had to wait until today to see if we had a test of our well water. As it turned out, the testing which is done is for pathogens and chlorine. I have been working with the service person from out pool supply for months. He has not been able to find out...

in the upper photo, the large pipe along the wall has the flow from the filter pit directly to the pool. The tubing on the far left goes to the flow cell. The next 2 feed the chlorine and the acid into the outgoing water. The water in the flow cell has always had concentrations of CHL & acid...

Water is not being heated. Just what is natural for Tampa FL Chlorine is tested by DPD. There is no measureable chlodramine levels. During the winter months, the pool gets very little use. It is just maintained. No thiosulfate or mps. We had a Polaris Watermatic C660 but after the following...

We use sodium hypochlorite solution, hydrochloric acid, sodium bicarbonate, and calcium chloride We have used cyanuric acid, but to take that out of the variable, there is none in, at least not measureable. We use diatomaceous earth on the filters (pre 1970 system) and the pH of our tapwater =...

Sorry, typo. Meant pH is 7.6

Originally, we replaced the ORP sensor. That had no effect. Then we replaced the controller as described. I described the subsequent work with the technician from our suplier. The stabilizer concentration drops over time. We have an old DE filtration system and the pit (3200 gal) is emptied each...

Our basic problem is that the ORP will drift up, especially during a warm, sunny day even when the chlorine concentration is not increasing (and sometimes even dropping). And I have not been able to find any reference to such a problem either on the internet or from our local technician. We have...