Quote Originally Posted by PoolDoc View Post
True polyquat is still made ONLY by Buckman Labs in Memphis. When the patent ran out on polyquat, and the me-too's started production, they announced a new patent on a feedstock chemical, locking things up for another 16 or 17 years.

For this reason (probably) the two main chemical companies, who control 75% of the brands, have made it harder and harder to find true polyquat. You MUST read the chemical label, to be sure.
The one thing that has always stuck in my mind since first finding this forum and the Pool Solutions site has been "read the label"

I tried two stores today, a Walmart and a hardware store, both had an algae inhibitor, neither had polyquat, the ingredients were such a mash of different chemical names that I didn't even try and write it down for reference, it wasn't polyquat was all I knew for sure. Interestingly there were some vague references to "3x concentrated" and "30%" on the labels too...trying to trick people into thinking it was the same stuff is what I assume.

I really don't like buying from "Leslies" because I hate funding the kind of bad information I have received from them over the years but I guess for some chemicals I just have no alternative

Thanks

HW