Ok, first, I have looked EVERYWHERE for help. Now to the real point. My pool is VERY foggy, and I keep adding the chemicals the pool store keep telling me. Last night I shocked it, and the week before, I shocked it... but nothing is happening. I cannot see the bottom, and when I test the pool with a strip, everything is usually ok except the "FCI." I guess its Free Chlorine, but under that it says Bromine. Which throws me off. I have been testing for days, and the second I get it to touch the perfect purple color, I test it again the next day... white, "0 FCI." I'm not sure if this has to do with the cloudy pool, but I tried everything the pool store told me to do about the fogginess. They just give me this chemical, which has a stupid name and makes me confused of what its supposed to do. Even if I have the FCI at the "ok" stage, the pool is still foggy, and I cant see the bottom. I don't think its algae because the sides don't feel slimy. But isn't the shock supposed to kill that? I don't know... just please help..