I'm not sure anyone here is going to know the answer to your question since we don't have too many members who are fans of the frog. The frog adds metals to the water which can cause a whole host of issues. Copper can fight algae but does not sanitize your pool. If you want to read more about that, you can use our search link:> http://pool9.net/search/ (This is better than the built-in search tool that is part of the forum software since it will search the entire forum and also on our sister website www.poolsolutions.com)
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