Pool is a new build, about a month old. I'm trying to get my CYA levels correct. I have put in about 11 lbs of granule CYA and my readings are at 30. I'm pretty sure I am doing the test correctly. I have watched videos and read numerous threads covering the topic. My test kit is about a month old. I last added CYA about a week ago and tested this morning. By most accounts I have added enough for my pool size.
Going to switch over to salt and want CYA at 70.