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Adjust the water for the fish or the fish for the water...

This is a discussion on Adjust the water for the fish or the fish for the water... within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> Based on the ratio of RO water to tank water in the last change the GH and KH should be no lower than 19 ...

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Adjust the water for the fish or the fish for the water...
Old 01-07-2013, 09:05 PM   #21
JDM
 
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Based on the ratio of RO water to tank water in the last change the GH and KH should be no lower than 19 in either hardness at absolute best, a little higher is more likely though. In that case a 17 and 14, respectively, indicates a fairly large natural adjustment factor of 10% or more. The RO water might produce as high as a 13% difference assuming a zero TDS content.

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