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Old 06-19-2012, 10:55 PM
LeanneP LeanneP is offline
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Default KH is 8 in Filtered Water. Is this ok?

I use an aquarium filter that I bought at J & L to filter my water and the KH is 8 after filtering it. Is this ok? When I mixed my last batch of water I had KH at 15 again. I did roll the bucket, but just wondering if that is contributing to my high KH.

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Old 06-19-2012, 11:02 PM
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Cal_stir Cal_stir is offline
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If it's a RODI unit, I think your test kit is wrong.
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Old 06-19-2012, 11:10 PM
LeanneP LeanneP is offline
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No, it is not a R/O unit. It is a cartridge filter.

Leanne
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Old 06-19-2012, 11:28 PM
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Still sounds too high, seems that you guys have pretty good water out west, I don't think your tap water would be that high KH even unfiltered.
Try a different test kit.
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Old 06-19-2012, 11:34 PM
425nm 425nm is offline
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Is this cartridge filter a carbon filter? If it doesn't have a deionization resin it probably won't affect hardness.
Is that water hardness reading the same as your unfiltered tap water?
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Old 06-20-2012, 12:07 AM
LeanneP LeanneP is offline
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I have just checked my tap water and it is at 7 and the filtered water is at 8 so I guess the filter is affecting the hardness some. It doesn't say what kind of filter it is, just that it takes out minerals, heavy metals, contaminants, chlorine etc. It is for aquariums specifically so I would hope it wouldn't screw up the water. I just thought I read somewhere that R/O water had 0 for KH so I was wondering if that was making my KH higher since it was already at 8 when I added salt to it.
Leanne P

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Is this cartridge filter a carbon filter? If it doesn't have a deionization resin it probably won't affect hardness.
Is that water hardness reading the same as your unfiltered tap water?
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Old 06-20-2012, 05:23 AM
chandigz chandigz is offline
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I believe your water filter has a particulate, carbon, di, in a single tube. If your water is 7 or 8 and your salt is formulated to mix at 7 or 8 with RO then the combined total would be 14-16.

Your filter is fine. Its just not the one you need out there. I'm lucky here on the island where it is very soft and pure. Our TDS ranges from 6 to 25, usually 8-12. your filter would be fine out here (I still use staight tap water, 7 years) but you would be better off with an RO or RO/di unit.
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Old 06-20-2012, 03:28 PM
LeanneP LeanneP is offline
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Thanks for the info. That is exactly what I was wondering, if the two were adding together and that was why I was getting the high numbers for the KH. Wish I would have known that when I got the filter. Thanks for your help.
LeanneP
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Originally Posted by chandigz View Post
I believe your water filter has a particulate, carbon, di, in a single tube. If your water is 7 or 8 and your salt is formulated to mix at 7 or 8 with RO then the combined total would be 14-16.

Your filter is fine. Its just not the one you need out there. I'm lucky here on the island where it is very soft and pure. Our TDS ranges from 6 to 25, usually 8-12. your filter would be fine out here (I still use staight tap water, 7 years) but you would be better off with an RO or RO/di unit.
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