Did I waste my money on this Hanna HR Nitrate checker?

[sergifed91]

I use the hanna and api test strips. I find both are fairly accurate. Although on accasion the API will have a few dudes in each package I get. The hanna nitrate checker is precise while the API is in the general ball park. That's all I use the API for. The rest of my tests a salifert mag, calcium and alk. But going to switch to hanna alk test since I switched salt to fritz pro un blue box.

 

[Yates273]

Update. Approx 2 months of carbon dosing the diy NOPox recipe and my nitrates are reading 19ppm. I would say NOPox is working at a slow pace I am currently on week 9 dosing 5.2 ml a day.
Red plating Monti looks 100 times better and very red

 

[marinaaquarist]

My Hanna HR is quite reliable

Hi, mine is reliable if the reagent works. Have two different lot numbers with a reading of 0.0. Used low range and got 14.3. The previous box of reagents worked great. Not sure what the issue is but this has happened now twice in about 4 months. The whole box reads 0.0.

 

[Lost in the Sauce]

Hi, mine is reliable if the reagent works. Have two different lot numbers with a reading of 0.0. Used low range and got 14.3. The previous box of reagents worked great. Not sure what the issue is but this has happened now twice in about 4 months. The whole box reads 0.0.

Strange..

 

[Reef.]

Does your api and Hanna match now?

 

[merkmerk73]

Hanna HR gives results comparable to Hanna LR. Nitrate tests are more likely to fail low because of problems with the zinc reduction, thats the shake like crazy for a minute or two step.

i also use the API nitrate test, but I modified the recipe to work in the Hanna Checker. It’s reliable too.

Someone sells a multiparameter reference standard. You might buy some and determine which test is off.

@Dan_P do the smart stirrers help with the ‘shake like crazy’ silliness?

 

[Dan_P]

@Dan_P do the smart stirrers help with the ‘shake like crazy’ silliness?

A vortex mixer is the type of mixing that could replace the wrist numbing shaking.