Hi. Total newb here. I'm trying to wrap my head around some things. I bought a house with a neglected pool. Trying to clean it up without draining. Made a little progress as pool was black and is now greenish. I replaced the sand in the filter as well. My question is in regards to slam. My test showed CC as .07 and FC as .06. So in my mind, to slam, I would have a target chlorine of .7 (10x CC). That just sounds wrong so with the numbers I'm set at a target of 10. But, in my brain, as FC is used it becomes CC. So would I not have to continually raise my target level?