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I just got a PH meter from Amazon. It is the Vantakool meter. I calibrated it last night using the 6.86 and 9.13 buffer packs in distilled water. After calibration tested on the buffer packs read fine. Tested my pool this morning and it showed a PH of 8.3. The test from my TF 100 said 7.5. I...

Thanks for the info. I didn’t have any liquid chlorine so last night I added 1.5 lbs of 73% calhypo to get FC up. According to pool math app should have taken FC to 8. After work tested the water. Results were FC 4.5 CC 0.5 PH 7.5 CH 225 TA 90 Cya 50. So I am guessing FC loss of about 3.5. I...

I got a TF 100 kit so I have been using it. Saturday first test results were FC 4.5 CC 0.5 PH 7.5 CH 325 TA 150 CYA 60. I added some water probably a couple inches in my 22000 gallon vinyl lined pool. Sunday FC 4 CC 0.5 PH 7.5 CH 300 TA 130 CYA 50. I added a gallon of concentrated chlorox to...

Thanks for the information. I forgot to list the ph. It is 7.5.

Newbie pool owner. We bought a new house last August with a 22,000 gallon inground vinyl liner pool. When we moved in the previous owner had left the pump off so of course green pool. Being newbies we had a pool store clean it up and had water tested by them. This year opened it myself still had...