~ jan wrote:
On Thu, 28 Jun 2007 03:08:14 CST, Nick Cramer

Check out http://www.appliedbiochemists.com/cutrine.htm for algae
control. It's fish friendly.
[ . . . ]

Is the Copper in this stuff a different (safer?) compound?

The copper itself is the same. An excellent article on the differences
between CuSO4 and chelated copper may be found at
http://www.bassresource.com/fish_bio...ae_copper.html from which I
briefly quote:

"For many years, nuisance algae blooms have been treated with copper
compounds, namely copper sulfate products. Metallic copper has proven to be
a powerful algaecide, however there are a number of potentially negative
side effects when using copper sulfate products."

"If you must use an algaecide, [i] strongly recommend using a product with
a chelated copper compound. These compounds are also using metallic copper
as the active ingredient, but in the chelated forms the copper is combined
with other compounds to help prevent the loss of active copper from the
water."

--
Nick. Support severely wounded and disabled Veterans and their families!

Thank a Veteran and Support Our Troops. You are not forgotten. Thanks ! ! !
~Semper Fi~