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Old 03-07-2011, 06:54 AM   #221 (permalink)
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Default Re: glutaraldehyde instead of excel

Hi megasycophant,

Yes, apparently there are chemical indicators, in the form of test strips, that can be used to check the viability of Metricide. The strips check for the Minimum Effective Concentration (which is 1.5%) in the application I described above.
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Old 03-14-2011, 10:20 AM   #222 (permalink)
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Default Re: glutaraldehyde instead of excel

Hi all,

Are we sure with 1.5% Glutaraldehyde concentration of excel?
Today I bought 1l of 50% chem pure glut, I have mixed 60ml of it with 1940ml water to make 1.5% solution. And I can dose this 5ml for 40l at water changes and 5ml for 200l daily right?

PS. I keep injecting 30ppm of CO2 with ph-controlled system. I aimed to use Glut as algicide and as additional carbon supply for the tank. Do you think there will be any problem due to excess of Glut or due to excess of CO2, if I keep injecting CO2 and dosing glut?
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Old 03-14-2011, 05:23 PM   #223 (permalink)
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Default Re: glutaraldehyde instead of excel

Hi bammbamm,

Yes, I am as sure as I can be without doing the testing. The testing was done by an ex-chemist in India; here is where the results are posted; you can review the entire thread or read the post dated Wed Apr 12, 2006 9:09 pm. It took me several weeks of Google searches to find that thread.

Yes, you are correct. 1940 ml of water plus 60 ml of 50% Glut will give you 2000 ml of a 1.5% concentration solution.

I use the Glut as an algaecide in conjunction with my 30 ppm CO2 measured with 4.0 dGH indicator solution in a drop checker. Glut, like Excel,
seems most effective on the "soft" algae types.and has some however minimal effect on GDA, GSA, or BGA. My plants seem to like the extra carbon!



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Old 03-14-2011, 06:16 PM   #224 (permalink)
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Default Re: glutaraldehyde instead of excel

Quote:
Originally Posted by Seattle_Aquarist View Post
Hi bammbamm,

Yes, I am as sure as I can be without doing the testing. The testing was done by an ex-chemist in India; here is where the results are posted; you can review the entire thread or read the post dated Wed Apr 12, 2006 9:09 pm. It took me several weeks of Google searches to find that thread.

Yes, you are correct. 1940 ml of water plus 60 ml of 50% Glut will give you 2000 ml of a 1.5% concentration solution.

I use the Glut as an algaecide in conjunction with my 30 ppm CO2 measured with 4.0 dGH indicator solution in a drop checker. Glut, like Excel,
seems most effective on the "soft" algae types.and has some however minimal effect on GDA, GSA, or BGA. My plants seem to like the extra carbon!


Hi Roy,

Thanks a lot for your detailed reply. I'll start dosing 20ml of 1.5% Glut solution at my 800l tank daily (100ml after water changes). My tank's KH is 3, and ph-controller set to 6.42-6.48 interval, so I'm injecting slightly more than 30ppm CO2. And the current setup is 1 month old, we'll see results
Thanks again.

Berkay
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Old 03-17-2011, 02:58 AM   #225 (permalink)
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Default Re: glutaraldehyde instead of excel

I have been mixing glut dilutions as well; and it does work for me. Plants are happy with the extra carbon and the it is keeping the black beard algae at bay
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Old 06-05-2011, 08:31 AM   #226 (permalink)
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Default Re: glutaraldehyde instead of excel

So I read another thread somewhere & did not know about not adding the activator. I used the activator. Do I trash it and start over or use it????
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Old 06-05-2011, 10:05 AM   #227 (permalink)
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Default Re: glutaraldehyde instead of excel

Hi Aquaticz,

I don't think I would use it. From the information that I can find, the ingredients in the "activator" are:
40% potassium acetate (which should be non-toxic) and
30% Polyphosphoric acids, esters with triethanolamine, sodium salts (the esters with triethanolamine may be toxic to fish)

I am not a chemist, and and it would depend upon the concentration of triethanolamine, but I would exercise extreme caution.

Possibly another member who has had this happen will relate their experiences.
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Old 06-06-2011, 11:38 AM   #228 (permalink)
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Default Re: glutaraldehyde instead of excel

Thx Roy

anyone?

so far I have dosed 3 tanks 4 times- no problems observed
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Old 07-01-2011, 10:41 AM   #229 (permalink)
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Default Re: glutaraldehyde instead of excel

Just ordered Metricide 14 - 1 gallon for $16. Ordered two of them and paid just $10 shipping. SO cheap!

http://www.dynamicdental.net/metricidegallon.aspx



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Old 07-01-2011, 01:55 PM   #230 (permalink)
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Default Re: glutaraldehyde instead of excel

+1 tax Gal
I did the same thing about 3 weeks ago because I wanted to make some
"Good &^*%" (mix your own micro)without buying excel. I definetly see a BIG difference for a small price - which for me is a part of the fun & hobby
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