Timbar, I've heard that 1tblsp per gallon mentioned by a lot of people, too. If they did use that amount, maybe that is what made them sick. That is 200ppm of chlorine at 5% clorox; for shocking a swimming pool, it takes only 10ppm. 1/2 teaspoon per 5 gal., or 3-5 drops per gal. is sufficient.

Ross just saved me a lot of trouble. I was on the road today thinking about posting the correction.

BTW, I cant take credit for the hurricane awareness topic. It was sent to me by a guy in our NOLA office.