Hanna calcium tester, would you recommend

[Shawnman]

It's time for a new calcium test kit, currently i use red sea calcium pro test and seems okay but I am interested in a digital to take out the guesswork.
Looking for feedback if you would purchase or not purchase. Tia

 

[bradreef]

Absolutely not. I love my phos and the alk is solid. Calcium test is trash.

 

[VintageReefer]

It's time for a new calcium test kit, currently i use red sea calcium pro test and seems okay but I am interested in a digital to take out the guesswork.
Looking for feedback if you would purchase or not purchase. Tia

Mine works fine, but it requires you to have deionized water to perform the test. I don’t use a rodi so I had to buy a bottle of di water. Not a huge deal, just a heads up. I do like getting the exact value

 

[robinm]

No, I went the other way and swapped my Hanna for the Red Sea Pro. The Hanna extrapolates the result from a 0.1 ml sample and is extremely difficult (for me anyway) to get a consistent result.

 

[VintageReefer]

No, I went the other way and swapped my Hanna for the Red Sea Pro. The Hanna extrapolates the result from a 0.1 ml sample and is extremely difficult (for me anyway) to get a consistent result.

But it had a super cool plunger device to extract a perfect .1 every time

 

[robinm]

I know but when the sample volume is 1/100th of the total test volume even tiny variations can have large effects upon the end result. I could never get a consistent reading.

 

[gbroadbridge]

It's time for a new calcium test kit, currently i use red sea calcium pro test and seems okay but I am interested in a digital to take out the guesswork.
Looking for feedback if you would purchase or not purchase. Tia

If's a good test but requires care and consistency with sample preparation.

In my experience it always is within 10ppm of ICP.

 

[vetteguy53081]

I find it user friendly and near consistent with my trident readings

 

[Mr. Mojo Rising]

I use it and trust the results.

 

[Randy Holmes-Farley Verified Community Expert]

IMO, it has far more complaints from users than most other Hanna kits, and it is poorly designed to be freakishly sensitive to calcium in the blank.

Fortunately, exact calcium values are not very important and a very wide range is fine (say, 380 - 500 ppm).