Hi. I am new to testing chemicals myself. I have a 18x44' vinyl lined pool salt water generator, 23,243 gallons (that's what they say). I went to the pool store 1 month ago and this is their readings. They gave me a bag of PH decreaser and a big bucket of something for calcium hardness. However, I did not add it to the pool yet, and instead bought the TF-100 kit and did my own testings a month later. This is the results I wrote on paper. I am attaching my handwritten results, along with a picture of what the pool store printed out for me a month ago. I tried entering my values into the pool math calculator and it's just really confusing, I'm not sure where to start. Also, I have no problems with my pool at all, but I want it to stay that way which is why I'm testing myself to maintain, water is crystal clear. Just many bugs coming in (springtails) and the weather is getting hot and humid, water temp is already 91 degrees . south Georgia here.