Frustrating Water Params (well for me at least) - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 10-18-2012, 04:03 PM Thread Starter
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Frustrating Water Params (well for me at least)

Here are the basic water params of my tank:
pH between 8-8.2
GH ~40ppm
KH ~300ppm

Don't have a TDS meter yet but I know are water is pretty soft, I just can never figure out why our carbonate hardness is always through the roof. I've added IALs to the tank but doubt it will do much.

I know that probably the best way to go would be getting RO water or system put in. Would filtering water through like a peat moss filter help out any.


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post #2 of 9 (permalink) Old 10-18-2012, 04:08 PM
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You have hard water.

You have a few choices on how to deal with it. You can accept the hard water and adjust your plant and fauna selection accordingly. That sort of water would be perfect for something like a low light planted shellie tank. You could do anubias, ferns, moss. Would be fun.

Or, you can get an RO unit or bring in RO via jugs.


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post #3 of 9 (permalink) Old 10-18-2012, 10:53 PM
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KH is a measure of carbonate ions in the water, and GH is a measure of some of the metallic ions, especially calcium and magnesium. Most carbonate in water comes from limestone, calcium carbonate, so it is a little unusual to have high KH, but not high GH. I wonder about your KH test kit.

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post #4 of 9 (permalink) Old 10-19-2012, 04:32 AM
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I would double check the test results, but if they are true:
To lower the KH, blend RO + tap, then add minerals such as GH booster or Seachem quilibrium to add back the GH minerals.
To lower the KH to a reasonable level you will probably be using about 75% RO + 25% tap.

Alternate:
ADD GH booster until the GH is at least 10 German degrees of hardness (180 ppm) and keep hard water fish and plants.
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post #5 of 9 (permalink) Old 10-19-2012, 12:56 PM Thread Starter
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Did the test again last night and just got this test kit only a week ago. GH was 5 and KH was 21. Think I'm gonna get a 5 gallon jug and borrow some RO/DI water from work for now and do a partial water change and see if that helps.

Thanks for all the helpful suggestions and direction y'all have given.


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post #6 of 9 (permalink) Old 10-19-2012, 01:12 PM
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Sorry for the bad advice on my part. Somehow I missed the ppm and put degrees in my head.


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post #7 of 9 (permalink) Old 10-19-2012, 01:29 PM Thread Starter
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No worries, I didnt know how to put it exactly the first post and I see most people put it into degree so thats why the second reading I put degrees.


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post #8 of 9 (permalink) Old 10-20-2012, 12:29 AM
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If you already have fish in the tank do not make this change all in one go.

Test a few blends in a bucket and when you want to make changes in the tank do water changes that result in no larger than 2 degrees (35 ppm) drop every 2-3 days.
It may take a month to get it where you want it, but let it take time. It is safer for the fish to make changes like this slowly.
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post #9 of 9 (permalink) Old 10-20-2012, 12:40 AM Thread Starter
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Thank you for the info. Will make sure to do that.


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