I don't think it will work for tannins, though I am not sure. The
following
site on the pucks gives a lot of information and discusses the clarifying
of
the water/
http://www.koivet.com/html/articles/...?article_id=76
--
RichToyBox

Works very well on tannins......Matter o'fact, got the info from one of your
pond club members Rich...............Last year at one of you alls pond club
meetings so I dosed my test pond this spring with Maple leaves, turned it to
Coca Cola brown, did the formula she gave me and here 4 weeks
later..........Voila.....Close to clear as you want to get...Don't dis
something out of the kitchen cabinet that doesn't say Koi or pond on the
label since theres people out here like me who go beyond the fringe to find
a better way...BTW, I keep in close contact with MSDS people who disclose
whats in the "pond"chemicals so as to use the every day products instead of
Pond-blah-blah for whatever.......Try pond bacteria for jump starting your
bio filter at $27.00 a small jug, and get a $4.00 box of
Rid-ex..........Check the chem's & ingrediants.........Same beneficial
bacteria breaks down sludge & algae to good stuff.......Same outcome.....My
fish in my 790 gal test pond are still ok...... No salt (occurs naturally)
No algae-fix....Just barley straw, Same chemical there......Don't need
"aquatic" plants, anything will grow in a body of water thats not chemed to
death....Anything...Roses are up and blooming, Thuja looks enormous right
now, Marigold seeds are just starting to sprout, and hostas have gone mad in
my bio-filter......Columbine and Petunias are starting to crawl and
Periwinkle is just starting to fold from early March bloom......Try
it............