High gh - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 5 Old 03-02-2007, 04:44 PM Thread Starter
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High gh

Ok I just did all the tests and here are the numbers.
I got a ph of 6.8
I got a kh of 5
I got a nitrite of 0
But my gh I added up to 30 drops and it still did not change.
Just kind of wondering what I could be doing wrong or what. I also tested my tap water which is what I do my water changes with and it did not register with up to 30 drops either.
Do these chemicals go bad? I have had the test kit for probably 6 or more years so I dont know if that has anything to do with it.

Please let me know what I can do to lower it without using bottled water.
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post #2 of 5 Old 03-02-2007, 04:58 PM
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I've never really used an indicator to test my gH, I just get all of the information and do the math, but... if you've been using the test kit for 6+ years, and you have never seen such high levels in the water, then your utility provider may have changed what is added or the amount that is added to your tap water. That would be a reasonable explanation to me. To lower these levels, you may consider (a) adding peat moss to the water or (b) removing a certain percentage of the water and replacing it with distilled water so as to achieve the gH that you want. Bottled water isn't necessarily softer. In fact, it's about the same hardness as your tap water.
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post #3 of 5 Old 03-02-2007, 05:06 PM Thread Starter
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I really havent tested the gh very much. Like hardly ever so I cant remember what my levels used to be because I never really worried about it but I am trying to redo my aquarium and make the plants grow better and make the fish healthier so I am doing lots of work to it.
I just didnt know if the chemicals went bad or not.
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post #4 of 5 Old 03-03-2007, 12:46 AM
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I've never really heard of such a case. I've been using my ammonia and pH indicators for well over 5 years now and they still report accurate results.
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post #5 of 5 Old 03-03-2007, 07:30 AM
Three items:

1) Yes your test kit can age and yield inaccurate results.

2) A Gh above 30 is not unreasonable for tap water.

3) I do not know of any method to reduce Gh without the use of RO water.

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