PoolDoc, my bad. Amazing the difference in a couple of letters: chloride, chlorine, nitrate, nitrite, etc. You are right to scold me for not being accurate

It is amazing the paranoia the government, and in particular the yahoos in the EPA cause. As a scientist I am skeptical of anything coming from the EPA, the Center for Science in the public, and similar NGO that don't have any relevant data to back up their claims. Often they will cite some obscure study in the hinderlands of France with a maximum of 100 subjects, and then claim the 300 + billion people on the earth will be similarly affected. (Sorry for the soapbox).

Thanks for the advice. Will get to the shocking. Also, should I continue to increase the CYA. The pool place has a broad range of 30-150 ppm. Is higher better in this case?

Aylad,
Good point, although I am less concerned with the viruses as opposed to water borne bacteria. The cells of virus are more susceptible to disinfectants, even low levels and are incapable of reproducing without a host. Bacteria commonly grow in water environments (e.g biofilms that are at water fountains, in water coolers, etc.). Nonetheless, still good points.

Thanks again for all the advice. I have some work to do to get this stabilized.

Rob