Richard Sexton wrote:
I really don't think it's an algaecide per se, but rather, it's bringing the
tank into a balance where the plants can out compete the algae.


No, it kills algae. Try it for yourself. Take a tank in good
shape. Add moss balls (Cladophora algae). Now add flourish excel.
The moss balls will die.

Dr. Greg Moran, CEO of Sea Chem will tell you it's not an algicide
and will explian why silly US laws make it so. But he will also
tell you not to use it on Cladophora as it will not do it any good.

There's no warning on the label about this becasue they figured
who'd want to grow algae?

I've got some Excel but haven't got around to trying it. What if you're
already injecting with CO2. Does it have any impact on shrimp etc? Will
my algae eating fish suddenly go hungry?

Nikki