I just got my Taylor K-2006 test kit in about a week or so ago and got around to testing my CH. I did the test and was 150 ppm. In looking at the recommended levels in pool school it says my plaster pool should be 250-350. When searching on the internet about the levels it says 150-400. Why is there such a difference and what will happen if my level stays at 150? How can I increase my CH (I know you can add calcium chloride, but where to buy and how to use)?
Thanks in advance!