I bought a $15 test kit on amazon when I bought my house 3 months ago. I took water samples to the pool store in the beginning and quickly realized that they are hacks. So they always told me that my levels were good except for the first time they had me add alkalinity stuff, at least I think thats what it was, because at the time I was totally unaware of what was going on. So now I have my cheap test kit that tests Free Chlorine, Total chlorine, and PH. My issue is this, I never add chlorine, the guy at the store sold me granules and told me to add half a cup to the deep end every other day and take measurements and adjust up or down from there. But I quickly realized that was too much. He also told me to shock my pool once a week, again way too much. So every measurement of Chlorine that I take is above the top of the scale or so it seems. My test kit says to add four drops of the solution to the tube invert a few time and check immediately. I don't know what to do. I go sometimes 7 days without adding any chlorine, and my levels are still high. I have been shocking my pool once every 2 weeks, but I have not been adding any chlorine at all recently. Whats going on?