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I kept up with chlorine and pH over the winter in my pool, but it has been just too cold to run the whole gamut of TF-100 over the winter. Just finally started to get a couple warm days together. TA is 30 CH is 100 CYA is 50 Everything else is okay. Can I add bicarbonate, calcium carbonate...

We've had a ton of rain lately and I've had to drain a lot of water from the pool. Finally have temps high enough for the SWCG, but now it's saying low salt. The Hayward T15 says I'm at 2200 ppm, but a test strip (from the TFP ordering site) reads 1700... That's quite a bit of a difference...

Definitely no trichlor/pucks. Nothing has been added other than rain water from the sky and chlorine generated from the cell. It was odd in that I could see precipitate in the solution in the first few drops into the CYA vial. I'll probably retest later this weekend.

We just got a ton of rain from the remnants of Harvey and I had to drain a bunch of water to keep the level in my inground fiberglass pool below the top of the skimmers last night. I cleaned the pool this morning and let everything circulate for a few hours and then decided to test all the...