Gah. I am so frustrated I feel like burrowing in my bed. I read the ABC's and feel clear on what my goal is but not the order in which to achieve said goal. LIQUID CHLORINE? I have none of that. My concern with the metal and stain preventer is multiple multiple posts on FB I saw about above ground pool owners having issues with metals or scaling and then having to completely drop the cholrine levels to zero to be able to use the product and wishing they had started with it. It seemed like a really common problem?