Good job. .5 or less can be ignored. That means you don't have a lot of organic stuff eating your bleach (or Vice Vera, really). I'm not at my computer right now but check under "handy references" and chemical on the left to see what the right range for your FC should be. If I recall it should be 5. Go with the plaster chlroine numbers now since your SWG has not been started yet.
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