"Edmond Cormier" wrote in message
news:f4E4d.81931$%S.50106@pd7tw2no...

"K Barrett" wrote in message
news:8aC4d.141788$3l3.120882@attbi_s03...
I thought everyone used pool algacide. Why pay for Physan?

Because one feels better thinking costlier means more! better.
Yet an Ammoniun quartenary is an Ammoniun quartenary! Ask your friendly
chemistry prof.
Ed Cormier


Agreed.

K