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Old 01/20/2018, 08:20 PM   #1
Ignitros
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Question I need help selecting which Hanna Checkers to purchase

I am currently using salifert tests and I'm getting frustrated with the color charts. The tests are easy to use but the color charts don't help me alot since I have trouble discerning the correct colors. I have heard good things about the Hanna Checkers. I just wonder which ones I should go with for a mixed reef tank. Which ones would you get?


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Old 01/20/2018, 08:47 PM   #2
bertoni
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The alkalinity meter seems to get good reviews on average, but the calcium meter has gotten more mixed reviews. The Phosphorus ULR Checker can be useful in diagnosing certain problems. What other parameters are you interested in checking?


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Old 01/21/2018, 08:28 AM   #3
lionfish300
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I use Hanna for Alk and PO4 but not Calcium ( got rid of it)


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Old 01/21/2018, 09:29 AM   #4
Optionman
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I use Hanna for Alk and PO4. Easy to use.


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Old 01/21/2018, 01:07 PM   #5
josephxsxn
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I have lots of HANA colorimeters and refactors: lr copper (ppb), iron, phosphate (ppm), alk (dkh), cal, ulr nitrite (ppb), saltwater refractometer. I love them all mostly because I hate judging colors, but in terms of most used: Alk, Cal, phosphate, iron (i dose iron, if you dose it test for it).

Many people didn't like the calcium colorimeter. My understanding is there was another version which did not include the micropipette and was just a plunger. Personally believe it does a fine job. But completely understand why it would be an impossible test with a plunger vs the pipette.

I also greatly appreciate the temperature compensation with the refractometer, it gives me great confidence that all may tanks in the house are in alignment and not just some fuzzy blue/white line reading... When the wife is taking care of mixing water or anything I trust her results a little more

If I got to do it again I would get the ULR (ppb) phosphate colorimeter, it would be more useful than the normal range one that is ppm, same with iron, it would have been better to get the LR that is ppb.


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Old 01/24/2018, 10:33 PM   #6
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Complete test lab ^


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Old 01/25/2018, 12:03 AM   #7
tkeracer619
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736 ulr phosphorus checker is the one to get for phosphates.

Josephxsxn, the Cu checker doesn't work with cupramine does it?


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Old 01/25/2018, 08:55 AM   #8
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I second the calcium meter’s accuracy. I use Salifert for Calcium testing due to the variabilities I was getting with my Hanna Calcium results. Great meter for Alkalinity though!


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Old 01/25/2018, 12:58 PM   #9
josephxsxn
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Quote:
Originally Posted by tkeracer619 View Post
736 ulr phosphorus checker is the one to get for phosphates.

Josephxsxn, the Cu checker doesn't work with cupramine does it?

So I do not use Cupramine so I cannot speak for the accuracy of it with that product. I personally use Brightwell Cuprion. Cuprion states that it raises the ppm of ionic copper ~.20 ppm per drop (I love that its ~ lol..)

Here is a simple test for your information, I get asked all the time do I keep photos. Below is a half gallon of RO water which has 1 drop of Cuprion in it so I should end up around 0.4 ppm. Note that its all ~, and even the Low Range Copper HANA Colorimeter has an accuraccy of +/- 10ppb +/- 5% at 77F, the readings below are colder then 77F FYI, probably more in the mid 60's. So we could expect a range easily (without temperature compensation) of 400ppb +/-10 +/- 20...

So yes I believe it will measure Cuprion accurately. Sure its alittle higher than our accuracy guess of 430ppb, but the temperature is wrong, and the Cuprion is a ~200 ppb addition.


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Old 01/25/2018, 05:11 PM   #10
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Cuprion should be detected by any copper kit since it is plain ionic copper, not chelated in any way.


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Old 01/25/2018, 05:38 PM   #11
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All of them. They’re great and I wish they made more.


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Old 01/25/2018, 11:00 PM   #12
josephxsxn
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After the calcium responses I felt it worth taking a bit more about my experiences with it. I pirated a photo of what I will call the 1st generation (not sure if really first gen or not) Calcium checker from reef builders, and attached it. You will see all of the 'syringes' as I will call them are non-mechanical (your the gear that pulls) I would never trust this method of dilution as far as I could throw it (which would be far very for the stuff we are measuring...)

On the other hand I have what I will describe as a mechanical syringe in my Kit, if this is the 2nd+ Gen (bought in 2017), but it is not the one on reef builders. You can see from the photo that mine measures 100ul of fluid, it is a 2 step press; first threshold is suction & release, then push to second threshold is expulsion++ ensuring that every drop is gone.

Looking back to my personal logs and comparing to ICP tests taken the same day;

12/11/2017 - HANNA = 491 , ICP = 464.23
11/13/2017 0 HANNA = 463, ICP = 478.30

I have another coming from a measure on 1/24/2018 which my Colorimeter read 457 and will update with my ICP results.

Frankly, consider that NSW could be 400, I consider my result more then good enough for tank level guidance. My results my not be accurate (but really in our world a difference of ~20ppm id call rather good for hobby level under $1k equipment) but my numbers imho are better then any human level color decoding...

Refs -
https://web.stanford.edu/group/Urchin/mineral.html
https://************.com/2011/06/15/...checker-hanna/


@Mods - I can please ask the mods to somehow raise the img file size... My pixel 2 xl defaulty takes photos much larger then our current size with the sponsor, it would be nice to not have to edit every single one..... The HANNA Cal photo was 4.4mb ootb... Its a new world guys, lets use our cameras for our absolutely amazing creatures, I would love to take photos of my frogs with motion.


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File Type: jpg 2017cal-1.jpg (75.5 KB, 17 views)

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Old 01/26/2018, 05:52 AM   #13
dlondono
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If you are serious about accurate readings, as accurate as it can be outside of an actual lab, you should consider the following hanna checkers:

Phosphate
Alk
Calcium
and a digital refractometer

The calcium checker gets a bad reputation because we don't know how to use it, myself included. Plus a long time ago there may or may not have been an issue with reagents or something.

The manufacturer has rectified any known issues with any type of reagent.
The calcium checker requires a person to be attentive to detail.
Requires the use of distilled water (buy a gallon of it at the local pharm)

The calcium test when done correctly and with distilled water instead of RO is super accurate and it is very fast to complete, as long as you memorize the steps and or open up the Hanna instructional video on youtube every time.

If you keep corals, get the digital stuff.
If you do not keep corals, just get the phosphate hanna checker and do water changes regularly.


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Old 01/26/2018, 04:39 PM   #14
josephxsxn
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Just got the next ICP result.

01/24/2017 - HANNA = 457, ICP = 482.03
12/11/2017 - HANNA = 491 , ICP = 464.23
11/13/2017 - HANNA = 463, ICP = 478.30


Average difference of (25+27+15) / 3 = ~22.3... The Accuracy of the HANNA Calcium Colorimeter on their website is within +/- 6% of the reading. All in all I am happy with these numbers, somtimes it seems alittle low or high but its all about guidance



Last edited by josephxsxn; 01/26/2018 at 04:48 PM. Reason: had the wrong entry from my log, corrected it.
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Old 01/26/2018, 04:46 PM   #15
bertoni
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The calcium kits I've used are titration kits, and don't require color matching. They give a clear color change, which works well with the unfortunate exception of color-blind people. I don't see any reason to believe that the Checkers necessarily are more accurate than titration kits. A 6% rating is worse than the Salifert rating for their calcium kit, although both specifications are more than accurate enough for our purposes. All kits, including the Checkers, seem to go through reagent problems from time to time.

My personal guess is that a good conductivity meter will be significantly more accurate than a digital refractometer, which I would trust less than a standard refractometer that's been calibrated recently. I haven't looked at the specs for digital refractometers at the hobbyist price level, but although I think they were mostly good enough for our purposes, they were not all that accurate.

Maintaining a reasonable cost structure is the most significant issue in testing, in my opinion. "Reasonable" will mean different things to different people, which muddies the waters.


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