Is it ok to use expired water conditioner and other items? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 07-01-2012, 01:05 AM Thread Starter
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Is it ok to use expired water conditioner and other items?

So I came across some water conditioner that expired in July 2011. I'm wondering if it is still ok to use? I also found Maracyn that expired in December 2009.
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post #2 of 3 Old 07-01-2012, 01:35 AM
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I would not use the expired medication for sure. 2009 is a loong time ago. Just too long for my comfort zone. I'm not certain about the water conditioner, tho.


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post #3 of 3 Old 07-01-2012, 01:20 PM
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Agree, toss the Maracyn to be safe.

I wouldn't expect trouble with a conditoner in only a year. I buy the largest size I can, since it is less expensive per volume, and I have taken a year or more to go through the 2g jug with no problems.
I have used water conditioner that had been initially opened 10 years earlier and it de-chlorinated with no ill effects. It was Kordon's NovAqua. Conditioner should be safe, but you might check with the manufacturer; some, like Seachem, will readily answer questions about their products.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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