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Old 02/25/2016, 06:53 AM   #2
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Join Date: Dec 2015
Posts: 1
I think this is my first post, but I have had freshwater tanks for many years. I know freshwater fish need the minerals that an RO system will remove. Unless you are replacing the minerals (there are additives) that the system removes, it will not be good to the health of the fish. I refill mine with treated (Seachem Prime) tap water. My LiquaGen RO/DI works well with no leaks and you can find them on Amazon or their website. In a saltwater tank, the salt replaces the filtered minerals.

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