Pristine blue is copper based. Copper alone is not safe and thus the use of copper alone is illegal in public pools in the US (private pools are not regulated). You need to use a sanitizer along with copper. A sanitizer alone is sufficient, so there really isn't any need for copper.
Copper also suffers from a couple of problems, notably that levels high enough to be effective against algae are also high enough to cause stains and turn hair green.
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Welcome to TFP! For a wealth of pool care information please check out our free Pool School. If you are in need of specific help then we encourage you to Register and ask us here in the forum!