Best test kits brand for KH and GH?? - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 03-06-2014, 03:11 PM Thread Starter
Saddletramp
 
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Best test kits brand for KH and GH??

What options are there for quality test kits. Elos looks good, but there are many others on the market.
Thanks in advance.
Bill
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post #2 of 7 (permalink) Old 03-06-2014, 03:39 PM
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Define "quality". What specifically are you looking for? A certain level of resolution? Accuracy? A high price tag that makes one assume the test must somehow be better?

API has worked fine for me. Resolution can be enhanced by doubling the volume of water under test, in which case each drop of test reagent represents 0.5 GH or KH. They are accurate, but the GH test in particular is untrustworthy if used past the expiration date marked on the bottle.

It's more important to learn caveats like these, and how to verify test kit operation by mixing calibration solutions. Any test kit can fail, regardless of price or perceived quality. I once spent $40 on a test which API sells for $6, only to find it completely failed. And so did its replacement. Thank goodness I verified it against calibration solutions rather than trusting it based on price.
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post #3 of 7 (permalink) Old 03-06-2014, 03:55 PM Thread Starter
Saddletramp
 
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Thanks.
Quality was not define so people would have a more open forum for response.
Your response has answered to that with some interesting and constructive comments
Much appreciated, Bill
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post #4 of 7 (permalink) Old 03-07-2014, 07:27 AM
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What has helped me greatly in the gH department:

I have a white mug that is pretty small. I pour 10mL of aquarium water in that and use the gH test kit from API. The white mug makes it MUCH easier to see the color change. Using 10mL for 0.5 degree resolution like previously mentioned.
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post #5 of 7 (permalink) Old 03-08-2014, 12:00 PM
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I really like the Sera gh/kh tests. Much prefer them to API which I used previously. I'll often double the resolution as suggested above when measuring lower values.

For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.
-Carl Sagan
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post #6 of 7 (permalink) Old 03-08-2014, 12:22 PM
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Sera without a doubt. Hit up darkestsky on here as he sells them, unless he ran out.
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post #7 of 7 (permalink) Old 03-08-2014, 05:35 PM
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Two Sera lovers in a row, so I'm curious, what is it specifically about them that is liked?
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