I bought a house last fall with a 20X40 inground vinyl pool. The setup includes a system similar to the Pool Wizard (i.e. competing product) plus an inline chlorine feeder. When I used a test strip in fall (before closing the pool), the results showed a TA of about 250, plus a high pH (>7.8) and a free Cl of 10. In prep for closing, I shut down the Cl feeder to get the Cl lower, plus added pH reducer (both dry acid & muriatic acid). I got the pH down around 7.8, but Cl readings were still near 10, plus TA really didn't go down. Through all this time, water was clear & seemed fine (didn't actually swim since it was too cold).
Fast forward to this month. Pool was opened & besides normal dirt, water was clear. Opened up the Cl feeder to shock pool. Cl readings are around 10, with pH around 7.6-7.8. but TA around 250. Just started adding some muriatic acid using the recommended 'pooling' method.
Just to make sure, I am have switched to using chemicals to test the water, but I am waiting for the chemicals to do their thing first. I also will need to run at high Cl when I replace the silver/copper cartridge, as recommended by the manufacturer.
Question is, am I over-worried about the TA? Should I work to reduce Cl levels as well? It never seemed to come down last fall, even after shutting down & clearing the feeder. Other posts note that TA may not be as big a deal if pH is stable & water is clear. What are acceptable highs for TA & Cl?
BTW, a great resource!!!!