If you are going to balance your own pool chemistry the first step is to throw away those test strips. They are doubly inaccurate given the colors are hard to read and each color represents a wide range rather than a discreet value. A decent liquid drop based kit may cost twice as much as strips but it will last 3 times as long and give accurate results. You can’t dose chemical additions properly without knowing accurate what your current levels are. The liquid tests aren’t hard to learn and will save a ton of chemicals, time and money in the long run