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post #1 of 17 (permalink) Old 11-30-2015, 01:25 PM Thread Starter
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gH & kH

How often should one check the gH/kH levels in their tank?
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post #2 of 17 (permalink) Old 11-30-2015, 11:24 PM
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As often as one wants.

If you check the levels every hour, and they are the same over a 24 hour period, then you can probably start checking every day instead.

If you check the levels every day, and they are the same over a week, then you can probably start checking every week instead.

If you check the levels every week, and they are the same...................

If you make changes to the tank that are likely to adjust GH and KH, then you should probably check the results.

Feel free to edit.
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post #3 of 17 (permalink) Old 11-30-2015, 11:48 PM
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Buy a cheap TDS pen style tester for under $10.
It can save on test kit usage until really needed.


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Growing is not that difficult.
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post #4 of 17 (permalink) Old 12-01-2015, 12:01 AM Thread Starter
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Originally Posted by Audionut View Post
As often as one wants.

If you check the levels every hour, and they are the same over a 24 hour period, then you can probably start checking every day instead.

If you check the levels every day, and they are the same over a week, then you can probably start checking every week instead.

If you check the levels every week, and they are the same...................

If you make changes to the tank that are likely to adjust GH and KH, then you should probably check the results.
Thank you, @Audionut.....I understand what you're saying.

Quote:
Originally Posted by Maryland Guppy View Post
Buy a cheap TDS pen style tester for under $10.
It can save on test kit usage until really needed.
@Maryland Guppy....what does this type tester do? How is it beneficial for testing gH/kH?
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post #5 of 17 (permalink) Old 12-01-2015, 01:50 AM
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Originally Posted by bassbuster23 View Post
@Maryland Guppy....what does this type tester do? How is it beneficial for testing gH/kH?
It will test total GH.
This is TDS Total Dissolved Solids.
A direct relationship to GH.
$10 pen type tester read in ppm of TDS / GH.
When in doubt test with GH/KH kit to confirm
On evilbay they are usually bundled with a pH tester.
Cost for both is usually under $18 shipped.

Every 1d GH is about 17.86ppm of GH.
Do the math run the test / either or.


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Last edited by Maryland Guppy; 12-01-2015 at 01:55 AM. Reason: forgot
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post #6 of 17 (permalink) Old 12-01-2015, 10:33 AM Thread Starter
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Quote:
Originally Posted by Maryland Guppy View Post
It will test total GH.
This is TDS Total Dissolved Solids.
A direct relationship to GH.
$10 pen type tester read in ppm of TDS / GH.
When in doubt test with GH/KH kit to confirm
On evilbay they are usually bundled with a pH tester.
Cost for both is usually under $18 shipped.

Every 1d GH is about 17.86ppm of GH.
Do the math run the test / either or.
Thank you!
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post #7 of 17 (permalink) Old 12-01-2015, 03:28 PM
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Here is an article on TDS:
TDS , what does it mean and why should i test? | The Aquarium Solution (US)

I've been using a http://smile.amazon.com/gp/product/B00MRLMG0M?psc=1&redirect=true&ref_=od_aui_detailpages00 and it seems to be working well.
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post #8 of 17 (permalink) Old 12-01-2015, 03:31 PM Thread Starter
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Here is an article on TDS:
TDS , what does it mean and why should i test? | The Aquarium Solution (US)

I've been using a Mudder Digital TDS Meter and it seems to be working well.
Thanks, @Argus.....interesting article!
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post #9 of 17 (permalink) Old 12-02-2015, 12:11 AM Thread Starter
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I just received my gH/kH test kit & checked my water. Results are...
gH: 80-100 ppm
kH: 130-140 ppm

What do these results mean? Are they normal?
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post #10 of 17 (permalink) Old 12-02-2015, 08:29 AM
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They are reasonable. Some people like to keep their KH a little lower, but it your numbers are within range for most fish.
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post #11 of 17 (permalink) Old 12-02-2015, 10:40 AM Thread Starter
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They are reasonable. Some people like to keep their KH a little lower, but it your numbers are within range for most fish.
What would be "preferred" ranges for these?
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post #12 of 17 (permalink) Old 12-02-2015, 11:56 AM
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Depends on what life you have in the tank.

Feel free to edit.
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post #13 of 17 (permalink) Old 12-02-2015, 12:24 PM Thread Starter
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I have seen some readings (like mine) in ppm and some in degrees (dkh?). I notice on LiveAquaria for instance, a certain fish may have 4-20 kH, but how do I know how many ppm that is?
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post #14 of 17 (permalink) Old 12-02-2015, 12:26 PM
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Most often, people recommend a minimum of 3-4 for both GH and KH, and are happy with anything above that. The only times there are problems past that is when you start getting really high GH (well past your levels) and certain plant and fish varieties. At moderately high levels (still past your ranges) you'll have a very small number of varieties that may struggle.

You probably won't ever have to worry about either of those again. That's a gross generalization, but you're in a pretty nice mid-range where just about anything can live and grow happily. Unless you decide to start going very exotic, it's not a concern. You might have trouble keeping Lake Tanganyika livestock, for example (too soft). Or really sensitive cardinia shrimp (too hard). There are a number of soft-water plants that *may* struggle with your parameters, but anything that would definitely struggle will probably be rarer and more expensive (if they didn't struggle, they wouldn't be rare or expensive, as your parameters are pretty run-of-the-mill).

Anyway, no reason for concern.
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post #15 of 17 (permalink) Old 12-02-2015, 12:30 PM
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Quote:
Originally Posted by bassbuster23 View Post
I have seen some readings (like mine) in ppm and some in degrees (dkh?). I notice on LiveAquaria for instance, a certain fish may have 4-20 kH, but how do I know how many ppm that is?
You should be able to find a conversion table online. I've come across them many times. Here is one: SaltyZoo's Alkalinity Reading Conversion (meq/l / dKH / ppm CaCO3) Utility
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