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Normal US sand??? Are you sure it does not contain coral chips? How about addition of stuff to alter pH? Large amount of phosphate buffer can cause the KH to be inaccurate though..did you add any pH up or down stuff?
Today, I bought a kH kit and I went home to measure the kH of my tap water and it show 1-2kH. Is this correct?
I never add any baking soda or chemical to alter the kH of my tank but the kH reading of my tank shows 3, why is it so? I am using JBL substrate fertilizer with the normal US sand as my substrate, not coral chips is added.
Normal US sand??? Are you sure it does not contain coral chips? How about addition of stuff to alter pH? Large amount of phosphate buffer can cause the KH to be inaccurate though..did you add any pH up or down stuff?
Plant Physiology by Taiz and Zeiger
I never add anything to the water.
Just wondering if it is the test kit that shows the wrong reading.
The brand of my kit is AQUMEDI.
Get another brand of kit to compare...AP make nice ones..[] GH/KH test kit all in one.
Plant Physiology by Taiz and Zeiger
KH should be near 0 for fresh tap wwater, thats at least my test kit show.
I am using Sera kit!
Mike
I think maybe the test kit not accurate. the kH of my tap water is 1-2 and the kH of my tank it show 3.
You should see blue for the first drop if the sample contains some kind of buffer.
Plant Physiology by Taiz and Zeiger
I have a kH kit. It says after blue it will turn to bright yellow.
How bright is bright btw ? Or it the first sign of yellow ?
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