Ok, so I've seen chem geek's suggestion that 1-bather hour requires aproximately 5 oz bleach to oxidize waste. Given my hot tub is a mere 290 gal, if my wife and I soak 1 hour per day, that's 10 oz 6% bleach or +17 FC, which is 1.5x shock level at 30 CYA. So basically I'm super-shocking every...