The Planted Tank Forum - View Single Post - Excel vs Metricide 14?
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Old 01-05-2013, 05:34 PM   #2
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Excel is a mixture of glutaraldehyde and water. So is Metricide, just at a slightly stronger (70%-ish stronger). Mix 10 parts Metricide with 7 parts water and you'll get a solution that's pretty close to Excel, at a fraction of the cost, with exactly the same ingredients.

Just don't add the little bottle that comes with the Metricide. Toss it.
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