"Bob Walsh" wrote in message
...
Xi,

Go to the Physan 20 website.
Find the chemical or ingredient makeup.
Go to a farm supply store and look in the dairy/horse chemical section and
you should find a product with the same ingredients under a different
brand name. That labeled for horses will be likely be less expensive,
probably because it doesn't recquire the same testing as that to be used
for dairy use.

Bob
Yes that's a good idea, and swimming pool algicide will do the same job
at a fraction of the price of Physan
Ed Cormier
"Xi Wang" wrote in message
news:NKsWd.580017$8l.398944@pd7tw1no...
Hi,

I was wondering, does anyone know of any Canadian suppliers of Physan 20?

Cheers,
Xi