Adjust the water for the fish or the fish for the water... - Page 3 - Tropical Fish Keeping - Aquarium fish care and resources
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post #21 of 21 Old 01-07-2013, 09:05 PM Thread Starter
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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.


Total years fish keeping experience: 7 months, can't start counting in years for a while yet.

The shotgun approach to a planted tank with an LED fixture

Small scale nitrogen cycle with a jar, water and fish food; no substrate, filter etc
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