Hanna checker v Apex

[Mbarragan7]

Hannah checkers
Nitrate 3.1
Phosphate .50
Alk 9.9 (Apex 9.02)
Ph 7.9 (Apex 8.24)
Mag 1175. (Apex 1328)
Calcium 532 (Apex-464)
Salinity 1.26 - refractometer

I’d like to have people’s inputs on what can be throwing off either Hannah or apex , I’m trusting apex as it should be more consistent , so what’s up with Hannah checkers ?

 

[eggie]

Hannah checkers
Nitrate 3.1
Phosphate .50
Alk 9.9 (Apex 9.02)
Ph 7.9 (Apex 8.24)
Mag 1175. (Apex 1328)
Calcium 532 (Apex-464)
Salinity 1.26 - refractometer

I’d like to have people’s inputs on what can be throwing off either Hannah or apex , I’m trusting apex as it should be more consistent , so what’s up with Hannah checkers ?

They both have +and - deviation its always good to check with a kit like Salifert
The Trident tests with a precision of +/- 0.05 dKh for Alkalinity and 15ppm for Calcium and Magnesium
I calibrate my Trident off my Salifert readings and it reads pretty close to it until the reagents are getting waisted

PH Probes should be calibrated as well with the reagents

 

[Randy Holmes-Farley Verified Community Expert]

I would not make assumptions on which is closer to reality without testing standards or calibrating them.

I’d stop testing magnesium. This is the 130,415,215th example that proves it is more trouble than it is worth.

https://www.reef2reef.com/threads/just-say-no-to-magnesium-testing-rmm-is-born.1017528/

 

[gbroadbridge]

The Trident tests with a precision of +/- 0.05 dKh for Alkalinity and 15ppm for Calcium and Magnesium

How did you test that?

Don't believe marketing hype.

 

[Pistondog]

I use hanna mostly, but verify occasionally with red sea or salifert or both.
Hanna (alk, nitrate, phosphate) is usually correct, except for the calcium tester we stopped using years ago.

 

[painter1982]

Hannah checkers
Nitrate 3.1
Phosphate .50
Alk 9.9 (Apex 9.02)
Ph 7.9 (Apex 8.24)
Mag 1175. (Apex 1328)
Calcium 532 (Apex-464)
Salinity 1.26 - refractometer

I’d like to have people’s inputs on what can be throwing off either Hannah or apex , I’m trusting apex as it should be more consistent , so what’s up with Hannah checkers ?

If you really want to know then do an icp test at the exact same time you do Hanna and Apex test. Keep notes and compare when icp results are in.

 

[eggie]

How did you test that?

Don't believe marketing hype.

Its written on there description

https://www.bulkreefsupply.com/trid...D=7497&indexName=brs_prod_m2_default_products