water hardness
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water hardness

This is a discussion on water hardness within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> I just found the hardness of my water as reported by the city listed as "212 to 410 ppm (12 to 24 grains)." with ...

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Old 09-09-2011, 12:13 PM   #1
water hardness

I just found the hardness of my water as reported by the city listed as "212 to 410 ppm (12 to 24 grains)." with those numbers, is that a reading of KH or GH (i'm assuming GH but i'm not sure)?
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Old 09-09-2011, 10:55 PM   #2
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I would say it is the GH. Most water supply companies only give the general hardness, some put it in degrees of hardness (dH) rather than ppm. You could email them to clarify if you want to make certain. Sounds like you have pretty hard water.

0 - 4 dH ... 0 - 70 ppm : very soft
4 - 8 dH ... 70 - 140 ppm : soft
8 - 12 dH ... 140 - 210 ppm : medium hard
12 - 18 dH ... 210 - 320 ppm : fairly hard
18 - 30 dH ... 320 - 530 ppm : hard
higher : liquid rock (Lake Malawi and Los Angeles, CA)
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Old 09-10-2011, 09:58 PM   #3
in my experience ur water is fine for the fish off all types i have angels and they are supposed to be really sensitive to hardness but have lived very long in my water which is basically the same as urs
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