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Re: [APD] excel

I don't know about a complex sugar but I am curious to know if anyone has  
tried or has anymore knowledge as to if Glutaraldehyde can be used for 
Polycycloglutaracetal (Excel).
I found a 50% / 50% Glutaraldehyde  / water solution of 100ml for $35.
Here is a post from another forum:
here's my friend's reply:  
"Actually I'm using glutaraldehyde. Both polycycloglutaracetal and  
glutaraldehyde are ingredients in Excel (from what little Seachem is willing to  admit) 
and from my reading they may have similar effects, namely as a  
photosynthesis precursor and an algaecide. I got the glutaraldehyde from my  Vietnamese 
friend who purchased it in a 50% solution (the highest concentration  available 
from what I've been able to determine) from a chemical supply company.  It is 
similar to formaldehyde and is used commercially as a fixative and  
disinfectant. The 50% solution is some pretty potent stuff - I only add ~1 mL  three 
times a week to my 125G and it has pretty much wiped out any sign of algae  with 
no ill effects on the fish. 
I haven't checked around to see where it is  sold but I'd be willing to bet 
it is available online somewhere. I would  recommend extreme caution in using 
it. I've heard that it can cause allergic  reactions in some people so even 
taking a whiff of it would be a bad idea. I  keep mine refrigerated to prevent 
any possible chemical breakdown." 
I got to  see this tank a week ago, and it is, in fact, pristine and  
Here is what _Wikipedia_ 
(http://www.answers.com/library/Wikipedia-cid-1624706334)  had  to say about it:
Glutaraldehyde is a colourless liquid with a pungent odor used to _sterilize_ 
icrobiology)&curtab=2222_1)  medical and dental  equipment. It is also used 
for _industrial water treatment_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Industrial+water+treatment&curtab=2222_1)  and as a  chemical 
preservative. But it is _toxic_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Toxicity&curtab=2222_1) , causing severe _eye_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Eye&curtab=2222_1) , _nose_ 
, _throat_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Throat&curtab=2222_1)  and _lung_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Lung&curtab=2222_1)  irritation, along with _headaches_ 
, drowsiness and dizziness.  
Glutaraldehyde is an oily _liquid_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Liquid&curtab=2222_1)  at room temperature (_density_ 
)  1.06 g/_mL_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Litre&curtab=2222_1) ), and _miscible_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Miscible&curtab=2222_1)  with _water_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Water&curtab=2222_1) , _alcohol_ 
22_1) , and _benzene_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Benzene&curtab=2222_1) . It is used as a tissue  fixative in _electron 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Electron+microscope&curtab=2222_1) . It is employed  as _embalming_ 
fluid, is a component of  leather tanning solutions, and occurs as an intermediate 
in the production of  certain industrial chemicals. 
An _isomer_ (http://www.
answers.com/main/ntquery?method=4&dsid=2222&dekey=Isomer&curtab=2222_1)  of Glutaraldehyde has recently  been developed by Seachem 
Laboratories, Inc. as a _fertilizer_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Fertilizer&curtab=2222_1)  for _aquatic plants_ 
1)  by providing a source  of organic _carbon_ 
(http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Carbon&curtab=2222_1) . It is marketed under 
the name  Flourish Excel. 
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