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Unread 12/18/2018, 01:29 PM   #1
Sohal Tang Tim
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Question Hanna Checker GOOD? NOT GREAT?

May I hear from those using this unit and let me know your feedback on it please.

Thanks

Tim




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Unread 12/18/2018, 01:33 PM   #2
rsucre
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Which one? Hanna produces a few checkers.

I have the Alkalinity dKH and the Ultra Low Resolution Phosphorus. In my opinion, both are great.


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Unread 12/18/2018, 02:01 PM   #3
Uncle99
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Love the Alk (quick easy and accurate)
Hate the CA (takes too much time)......use salifert
Phosphate ( inaccurate IMO).....use sea chem
Phosphorus ( good)
Nitrate (good, but use sea Chem because it is faster)


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Unread 12/18/2018, 02:07 PM   #4
Crooked Reef
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I like the alk and phosphate. The cacium is supposed to be hard to use and not that accurate.


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Unread 12/18/2018, 02:12 PM   #5
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I use the low range phosphate checker. It works well as long as you take a couple of things into account:

1. Its accuracy is within the range we might normally keep our tanks That means you should take the absolute reading with a grain of salt. A .03 ppm phosphate reading could be 0 or .06. No big deal as long as you understand it.

2. The test tube can become etched/scratched and cause false readings. BRS sells replacements for cheap.


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Unread 12/18/2018, 03:04 PM   #6
Scrubber_steve
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The new version of the RedSea Pro phosphate test is as accurate & easy to read as any reef hobbiest could ever need, & cheaper than hanna


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Unread 12/18/2018, 04:17 PM   #7
Sohal Tang Tim
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Sorry Guys I should have put CALCIUM CHECKER by HANNA...thats what I need info on please / Thanks...sorry about that


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Unread 12/18/2018, 09:19 PM   #8
Joe0813
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both the calc and ALK were way off for me.. I almost nuked my tank because the alk was saying it was 7.7 so I would keep dosing and dosing only to find out it was at 16. I use the copper checker and it is awesome


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Unread 12/18/2018, 11:07 PM   #9
bertoni
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The calcium Checker gets more mixed reviews, probably because of the dilution step, but it might be close enough. If you target 400 ppm, anything between 350-450 ppm should be fine, so low precision might be acceptable.


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Unread 12/20/2018, 06:36 AM   #10
Sohal Tang Tim
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The whole idea, for me, for digital, is I want to know the exact reading..or extremely close by no more then say 10 ppm off...if it cant do that then I dont need digital is my thinking... I watched a video and the guy said that over 90% of the problems people have had with the calcium checker are *HUMAN ERROR*.... i really feel I can do the test properly keeping the test vial SPOTLESS with micron cloth etc...and I am wondering of others that are doing the test perfectly are getting excellent *accurate* numbers... thanks for your input so far everyone...keep it coming...thanks kindly, Tim


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Unread 12/20/2018, 08:12 AM   #11
RobZilla04
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Quote:
Originally Posted by Sohal Tang Tim View Post
The whole idea, for me, for digital, is I want to know the exact reading..or extremely close by no more then say 10 ppm off...if it cant do that then I dont need digital is my thinking... I watched a video and the guy said that over 90% of the problems people have had with the calcium checker are *HUMAN ERROR*.... i really feel I can do the test properly keeping the test vial SPOTLESS with micron cloth etc...and I am wondering of others that are doing the test perfectly are getting excellent *accurate* numbers... thanks for your input so far everyone...keep it coming...thanks kindly, Tim
I agree that the majority of inaccuracies with the Hanna Checkers are cause by humans.

Each time I use mine, I rinse them with RODI water, shake excess water, and let them air dry. When testing I make sure to thoroughly rinse the vial in my tank water, and wipe completely clean with a dry micro fiber cloth. Place the vial in the checker the same way both times also (usually with the 10ml facing me). Ensuring that all of the reagent, particularly the powders, enter the vial is crucial.

For the Phosphorus checker, I use two vials. One for the tank water sample and a separate with tank water and the powder reagent. This gives me extra time to make sure the reagent completely dissolves. If you do this one first, you can use the first vial for the Alk checker test also.


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Unread 12/20/2018, 09:30 AM   #12
Sohal Tang Tim
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Robzilla....do you believe you are getting accurate readings with your Calcium checker?
When was last time you tested and what reading did you get may I ask? How do you know you are getting accurate readings? Thanks alot.


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Unread 12/20/2018, 11:16 AM   #13
eutimio
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ELOS calcium is a good one.
Very fast to mix and accurate.


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Unread 12/20/2018, 01:30 PM   #14
Sohal Tang Tim
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Thanks Eutimio...yes it looks like a nice process on youtube..thanks. Tim


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Unread 12/20/2018, 10:01 PM   #15
bertoni
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The Salifert kit seemed to be very stable and precise, in my experience. I tested it against various kits, and got consistent results with it. The precision was something like ±4-8 ppm or so. The Salifert site might have some specifics.


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Unread 12/20/2018, 11:30 PM   #16
Seasidenj
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I use all Hanna checkers and I love them


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Unread 12/21/2018, 07:15 AM   #17
Uncle99
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Quote:
Originally Posted by bertoni View Post
The Salifert kit seemed to be very stable and precise, in my experience. I tested it against various kits, and got consistent results with it. The precision was something like ±4-8 ppm or so. The Salifert site might have some specifics.
Yup, agreed, Salifert for me too, very accurate, the Hanna is nice but too much work


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Unread 12/21/2018, 12:34 PM   #18
RobZilla04
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Quote:
Originally Posted by Sohal Tang Tim View Post
Robzilla....do you believe you are getting accurate readings with your Calcium checker?
When was last time you tested and what reading did you get may I ask? How do you know you are getting accurate readings? Thanks alot.
I tested in July the same day I sent my water out for lab analysis. Hanna gave me 445 and ATI 464.

Id say thats darn close enough.

FYI waiting for my December test rests to come back from ATI.


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Unread 12/21/2018, 03:10 PM   #19
Sohal Tang Tim
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Ya RobZilla thats definitely close enough for me too....Thanks for that input!

Tim


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Unread 12/21/2018, 09:19 PM   #20
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I use the new RedSea pro alk test. is accurate, is good


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