Can dry ferts go "bad"? - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 09-06-2014, 04:49 PM Thread Starter
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Can dry ferts go "bad"?

Hello all,

This may be a silly question, but can dry ferts go bad? I mean in the sort of "salt losing its saltiness" sort of way.

I'll be starting a new aquarium up again in November, and it's been since March that my dry ferts have been sitting around in sealed, Tupperware-type containers. Would these still be okay to use, or will they lose potency over time? Not sure how humidity, etc. might affect them.

David


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post #2 of 5 (permalink) Old 09-06-2014, 06:07 PM
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Smile The Only Silly Question... Is the One Not Asked...

Generally no, about the only exception might be mold in a micronutrient mix (CSM and such) that got wet. Other than that as long as nothing got washed away, there isnít much to go wrong with a salt.

I also might note that many of the salts lay around for thousands of years before we use them.

To purify salts we dissolve them and let them recrystallize.

Hope that helps.

Joe
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post #3 of 5 (permalink) Old 09-06-2014, 06:56 PM
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I agree with Joeroun. However, I'd like to add that trace mixes are also photosensitive. So storing them improperley can degrade various components. Simply store them in a cool, dry, dark location in a well sealed container. As far as the macro salts, I'm not aware of anything that will significantly reduce the efficacy of them. They are hydroscopic so a sealed container is warranted.
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post #4 of 5 (permalink) Old 09-06-2014, 09:26 PM Thread Starter
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Sounds like I can keep my macros, but I'll probably buy some new CSM+B just to be on the safe side.

David


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post #5 of 5 (permalink) Old 09-06-2014, 09:31 PM
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I would use it. The degradition would be minimal. You would have to try to cause enough damage to warrant discarding it.
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