The Planted Tank Forum - View Single Post - Flourite that has been left outside. Still good?
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post #4 of (permalink) Old 01-16-2013, 08:32 PM
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Join Date: Jan 2012
Location: Oakland, CA
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It's pretty much inert, so sitting outside isn't going to really do much to it. (barring exposure to pesticides, soap/detergent, petrochemicals, etc.)

I wouldn't even worry about sterilizing it, I doubt it would pick up much harmful to a fish in a terrestrial environment. - just give it a good rinsing to get out any dust/bugs/debris that may have accumulated
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