The Planted Tank Forum banner
21 - 31 of 31 Posts

·
Registered
Joined
·
868 Posts
I don't think Tom has had complaints from selling the stuff. I was not going to say I bought it from him but he is part of the club. Hope writing this is ok. oops if not.
I may have picked up a bottle that was not diluted. The viscosity is a bit different then in the gallon. I did stop using that bottle but the gal seems ok. I have Discus and they can be sensitive to additive so there may be many reasons they react the way they did.
 

·
Registered
Joined
·
13,610 Posts
I think my point is long term exposure risk are not tested for this use for humans.

If you use some, here and there, have a small tank, good ventilation in the home, not an issue. If you have a tiny room without much circulation in the air, dose 2-4 tanks daily.........sleep in there, etc..........

I have 5 good sized tanks, but do not use it daily for such reasoning.
But I understand risk assessment better than most aquarist.

Having said that, I'll go take my chances now on the I80/101 drive O death and carnage:icon_mrgr

Regards,
Tom Barr
 

·
Registered
Joined
·
286 Posts
I have been using Cidex(it comes with an activator on top, throw that away, DO NOT USE!) from a local source for about a month now. I have to say that it is very similar if not the same as Excel. The gallon I purchased lists the solution at 2.4% Glutaraldehyde and 97.6% inert. I can say that I have had no problems with it so far, and has done a great job in my tank. Mostly for a algaecide. As far as long term effects on humans- I would not mess with the 50/50, 25/75 mixture. I am going to stick to the low percentage Cidex(which is no different than Seachems Excel), and I would recommend doing the same for everyone else. Its too risky to try and dilute yourself. :icon_excl

Flourish Excel is a 2.5% solution of Glutaraldehyde.
http://www.seachem.com/support/MSDS/FlourishExcel.doc.pdf

Cidex is listed as a 2.55% solution of Glutaraldehyde.
http://www.sterrad.com/Customer_Support/us...ivated_msds.pdf


Here is a few more links....

http://www.aquaticplantcentral.com/...iasts/31615-glutaraldehyde-instead-excel.html

http://indianaquariumhobbyist.com/communit...asc&start=0
 

·
Registered
Joined
·
286 Posts
So one link you claim is 2.5% the other clearly states and is correct(1.5%).



Regards,
Tom Barr

That not what I claim. That is what Seachem Claims. It was on there MSDS sheet at one time. I am just adding some info so others can decipher for themselves. And yes someone on the indian forum did some testing and supposedly came up with 1.5%. Take it as you will, as I believe the 1.5% is the correct percentage. Just trying to help. :proud:
 

·
Registered
Joined
·
2,709 Posts
I find it fascinating that Seachem has changed the composition of Flourish Excel.
The new MSDS
http://www.seachem.com/support/MSDS/FlourishExcel.doc.pdf
(Date Prepared: 28 September 2009) shows - Aqueous solution of polycycloglutaracetal.

An older MSDS
http://docs.google.com/gview?a=v&q=...&gl=us&sig=AFQjCNHJAiIlm1YizWcjDWh5ozK5RtWXlA

Date Prepared: 07 July 2006 shows Aqueous solution of glutaraldehyde

What I can't find is the MSDS from 2008, even in the WayBack machine.
That one listed a x.x% Aqueous solution of glutaraldehyde
Such is life when one attempts to save money.
 

·
Registered
Joined
·
21,007 Posts
Not being a chemist, I have no idea if glutaraldehyde and polycycloglutaracetal are the same substance. Does anyone here know? Also, my memory is that Seachem has always said that Excel is a glutarXXXXXX polymer, not just glutaraldehyde and water. Again, as I recall, one of the forum members was the first to say it was just glutaraldahyde, not Seachem. Perhaps the best answer to this problem is to limit ourselves to using Excel as directed on the bottle - no 2X, 3X dosing. Just thinking out loud.
 

·
Banned
Joined
·
5,003 Posts
FROM: http://en.wikipedia.org/wiki/Glutaraldehyde

Algaecidal activity

A polymerized isomer of glutaraldehyde known as polycycloglutaracetal is a fertilizer for aquatic plants. It is claimed that it provides a bioavailable source of carbon for higher plants that is not available to algae. Though not marketed as such due to federal regulations, the biocidal effect of glutaraldehyde kills most algae at concentrations of 0.5 - 5.0 ppm. These levels are not harmful to most aquatic fauna and flora. Adverse reactions have been observed by some aquarists at these concentrations in some aquatic mosses, liverworts, and vascular plants. [4]

References

4. http://www.americanaquariumproducts.com/AquariumPlants.html
 
21 - 31 of 31 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top