Hanna master reef test amonia

[Ives]

I have just received the hanna amonia reagent to use with my hanna master reef test kit. Amonia showing at 0.32. Thought this seemed to be high as the disk on side of my tank is the ok colour. Measured the amonia twice with my salifert kit and both times showing the lowest on the scale which I was expecting. Which test kit would be the best to give the correct result hanna or salifert. Have searched the forum before posting and cannot find anything. Tia ive

 

[Lasse]

The Hanna shows total ammonia - both the not dangerous NH4 and the dangerous NH3
The disk only shows the dangerous NH3
At pH around 8 - NH3 is around 5-10 % of the total NH3/NH4. If your NH3/NH4 is 0.32 - your NH3 (the toxic form) is between 0.016 and 0.032

You are good

Hanna is known for sometimes show a wrong reading of NH3/NH4 (around 0.2) and the reagent can give a little "own colouration" When I get a new batch - I do a 0 test on a 1 day old fresh salt-mix and use the result as correction digit with the actual batch.

I prefer Hanna - it give me a number not a colouration

Sincerely Lasse

 

[mmorrison55]

The Hanna shows total ammonia - both the not dangerous NH4 and the dangerous NH3
The disk only shows the dangerous NH3
At pH around 8 - NH3 is around 5-10 % of the total NH3/NH4. If your NH3/NH4 is 0.32 - your NH3 (the toxic form) is between 0.016 and 0.032

You are good

Hanna is known for sometimes show a wrong reading of NH3/NH4 (around 0.2) and the reagent can give a little "own colouration" When I get a new batch - I do a 0 test on a 1 day old fresh salt-mix and use the result as correction digit with the actual batch.

I prefer Hanna - it give me a number not a colouration

Sincerely Lasse

Thanks for this info Lasse. I did not know this about the Hanna ammonia checker test.

I just ran a few tests on my main display and my smaller nano tank just for grins and since I have the tester and a lot of reagent to use, so I like to check my ammonia every few months just for grins.

Funny (or odd) that both my main display no my nano both showed .19 on the reader.

Also, im not sure im following your 0 test process, but im trying to think about how that would be done.

Are you saying when you test fresh day old salt mix (before it’s put into your display with water changes) that you check it’s ammonia and you will get a reading from your Hanna test kit? And then you just note that and subtract any value from the result of the next time you test your display tank water?

 

[Ives]

The Hanna shows total ammonia - both the not dangerous NH4 and the dangerous NH3
The disk only shows the dangerous NH3
At pH around 8 - NH3 is around 5-10 % of the total NH3/NH4. If your NH3/NH4 is 0.32 - your NH3 (the toxic form) is between 0.016 and 0.032

You are good

Hanna is known for sometimes show a wrong reading of NH3/NH4 (around 0.2) and the reagent can give a little "own colouration" When I get a new batch - I do a 0 test on a 1 day old fresh salt-mix and use the result as correction digit with the actual batch.

I prefer Hanna - it give me a number not a colouration

Sincerely Lasse

Many thanks pleased to hear all seems to be ok

 

[Lasse]

Last week my show the simulare numbers and I´m not awake during nights because of that

Sincerely Lasse

 

[Lasse]

Are you saying when you test fresh day old salt mix (before it’s put into your display with water changes) that you check it’s ammonia and you will get a reading from your Hanna test kit? And then you just note that and subtract any value from the result of the next time you test your display tank water?

Yes - I do a zero test once/batch. It use to be around 0.06 -0.1. I would wait on day because some salts can have small amounts of ammonia in them and maybe also aerate the sample before testing. I use a liquid salt and its probably very low NH4 residues in that salt

Sincerely Lasse