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My kH is 9.5dKH. I know its supposed to be around 7-8. What causes it to be high, is this a dangerous level and how can I lower it?
Thanks,
Bill
Thanks,
Bill
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9.5 is perfectly fine. You could almost double that and not see any real stress from most inhabitants. Much higher than natural levels used to be the prefered for aquariums. If you're not using any 2 part additives then I would suspect it's where it is because of the levels of your salt when it's mixed.

