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My water is KH=6.5, GH greater than 20. The water for me is perfect for my plants. Why would you want to change yours?
Also, it seems that some of the Aquarium Pharmaceutical GH kits give this kind of erroneous reading. Are you using the AP GH kit?
Steve Pituch
Also, it seems that some of the Aquarium Pharmaceutical GH kits give this kind of erroneous reading. Are you using the AP GH kit?
Steve Pituch