KittenFishMom Posted December 25, 2021 Share Posted December 25, 2021 I want to switch from using stream/lake water to using well water in my tanks. The well has a UV filter and a mechanical paper filter for the grit, nothing else is done to the well water. The tank water is from the stream and the lake. I finally got a quiet moment to test the tank water and the well water to compare them, using Aquarium Coop strips: Tank: Hardness (GH)ppm=300 Buffer (KH)ppm= 80 pH=7.2 Well: Hardness (GH)ppm= 25 Buffer (KH)ppm=180 pH=8.4 Can I just start doing 25% water changes with the well water, or do I need to go more slowly than that? Like a 25% change with half stream half well water? I am aiming at weekly water changes. I know this is a very busy time for many of you, so I won't start using well water until I get a number of replies. Thanks in advance. Link to comment Share on other sites More sharing options...
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