Small help with Glutaraldehyde solution - The Planted Tank Forum
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post #1 of 8 (permalink) Old 09-16-2017, 02:14 AM Thread Starter
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Small help with Glutaraldehyde solution

hello all

Do i Must use RO or Distilled water when making a Glut solution ? or Tap water is ok ?

if tap water is not ok so why ?
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post #2 of 8 (permalink) Old 09-16-2017, 02:28 AM
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Hi Gamezawy,

Tap water is fine. However, glutaraldehyde is susceptible to light so an opaque container for storage is best.

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post #3 of 8 (permalink) Old 09-16-2017, 06:53 PM
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Why would you need to make a solution? Just use a proportionate dose.
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post #4 of 8 (permalink) Old 09-16-2017, 08:02 PM
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Quote:
Originally Posted by Seattle_Aquarist View Post
Hi Gamezawy,

Tap water is fine. However, glutaraldehyde is susceptible to light so an opaque container for storage is best.
Didn't know this, I've always kept mine in a window sill next to my tank. I'm assuming being in contact with light makes it less effective?

Just a noob


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post #5 of 8 (permalink) Old 09-16-2017, 08:09 PM Thread Starter
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i just read that i should use RO or Distilled water ( which i dont easy have them ) when making the 1.5 Glut solution

and yeah Nlewis you shouldn't put glut solution in light also like the h2o2 ( Hydrogen peroxide ) the light breaks them
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post #6 of 8 (permalink) Old 09-16-2017, 09:08 PM
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Quote:
Originally Posted by Nlewis View Post
Didn't know this, I've always kept mine in a window sill next to my tank. I'm assuming being in contact with light makes it less effective?
Hi Nlewis,

Per Seachem:
Quote:
Normal lighting shouldn't be an issue, so I wouldn't worry about keeping Excel in a clear container. I would still recommend keeping it out of direct sunlight.
Hi All,

I use 50% concentration glutaraldehyde to make my 1.5% solutions, I have done this for over six years. I used to use distilled water for my solutions but about four years ago I switched to plain tap water.....I have seen no degradation in performance.

Glutaraldehyde is typically used in the healthcare industry for sanitizing or used in electron microscopy to stabilize cell samples as a 'universal fixative'. When used with electron microscopes it needs to be "extremely pure and free from contaminates"..... for that application they use distilled water to dilute concentrated glutaraldehyde.

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Last edited by Darkblade48; 09-17-2017 at 07:31 AM. Reason: Please use the edit function for back to back posts to keep threads cleaner
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post #7 of 8 (permalink) Old 09-16-2017, 09:19 PM
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Yeah, UV can break down all sorts of compounds

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post #8 of 8 (permalink) Old 09-17-2017, 07:25 PM
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When I switched to Metricide, I mixed with water to match excel strength....but then I just started using it straight just a bit less at a time - no muss, no fuss.
I'm hoping my battle with BBA is over....but the "guns are still loaded". :-)

Tank On, Mike-
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