Hello, pretty new on here, but just got a new liner in our pool and filled with well water. We have a reputable pool supply store pretty close, so use them for some chemicals, though expensive, but moreso for advice and free computer water testing. We had them test the water just after filling to see what we had going, results came back favorable as follows: pH: 6.6 / TA: 100 / CH: 225
Next test after adding about 4 lbs of sodium bicarbonate, 6 days later: pH: 7.0 / TA: 60 / CH: 100
Last test after having added sodium carbonate, bicarbonate and chlorine: TC: 1.7 / FC: 1.0 / pH: 7.0 / TA: 70 / CH: 225 / CYA: 0
I tested several times along with test strips and "older" reagent test kits and don't get the same results. If anything, I see a TA of around 150-180 using test strips and 2 different reagent kits. I tested my incoming well water tonight and got a pH of 7.6 & TA of 190-200. My supply store says I still need to add 10-15 # of sodium bicarbonate, but I am not seeing that...what's up here?