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Hello everyone...

In the next week i will be given a 38 gallon tank with a canister filter , not sure of the brand or size... but they were both used for saltwater. I was wondering if there is anything i need to do before using this filter for freshwater? Do i need new media?

Thanks,
Bam204
 

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Personally, I always replace the media from a used filter. Sometimes they can be hard to get really clean if they were left to dry out full of gunk. Why add any additional nitrate sources to a system. The plastic should be just fine as long as any mineral deposists are removed (vinegar works great)
 
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