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Old 14-03-2005, 08:54 PM
Richard Sexton
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That's not to say that I doubt that Excel can kill algae, or at least
make its life miserable - it's just I can't find any sort of
*explanation* of why it kills algae, just anecdotal claims that it does.
I'm curious for the reason behind it - what's in it that might cause the
effect people see?

The active ingredient in Flourish Excel is polycycloglutaracetal.
My vauge understanding of this is the acetyl part is the bit
that hurts alage.

I urge you to write Dr. Greg Moran, CEO of Sea-Chem who
makes this stuff. He's very open about this stuff.

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