Tapwater and kH - The Planted Tank Forum
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post #1 of 2 (permalink) Old 06-15-2005, 05:32 AM Thread Starter
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Tapwater and kH

Is it normal for kH to fluctuate in tapwater? When I first set up my tank, I tested kH and pH almost daily to read the co2 charts. My tapwater and tank water were always at a kH of 4 so I eventually stopped testing kH.

I've been doing large water changes daily to deal with the eco-complete phosphate issue. Yesterday, I tested my kH and it was 2 in both my tank and in my tapwater. I was very surprised to find this. Is this normal?
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post #2 of 2 (permalink) Old 06-15-2005, 12:06 PM
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In many areas of the country it's not uncommon for water chemistry to fluctuate during the year as the water source changes. Different wells and such.

Here in Portland we see a change in water chemistry in late summer when to switch to the backup wells. Also during very rainy periods we can notice a change in the water chemistry. Since most of our water comes from the Bull Run watershed and is not pumped from the ground.
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