Testing Calcium

[Rugggs3]

Im currently using the API test kit

I heard that this test is not super accurate

I was looking into purchasing a hanna calcium checker but heard that those are a pain.

Which do you recommend?

Thanks for reading

 

[Uncle99]

I have the Hanna CA checker, used it once and never again....hard and not accurate...
Salifert makes a good CA test kit.

 

[Rugggs3]

I have the Hanna CA checker, used it once and never again....hard and not accurate...
Salifert makes a good CA test kit.

I'll look into them thanks!

 

[m_t_r_86]

I use a hanna calcium checker and love it. I found using rodi instead of distilled (as instructed) will give you a large margin for readings. Since using distilled water and following the instructions properly, my readings are exactly where I want them with very little fluctuation. Yes there are quite a few steps involved but having a digital reading as opposed to matching colors is priceless. Especially for calcium, which has a large margin for error before any negative effects are seen.

 

[Randy Holmes-Farley Verified Community Expert]

I found using rodi instead of distilled (as instructed) will give you a large margin for readings. Since using distilled water and following the instructions properly, my readings are exactly where I want them with very little fluctuation.

That's because, IMO, it is poorly designed, being hypersensitive to tiny traces of calcium in the blank.

 

[Chuk]

I've tried the hanna and I didnt like it. It uses a tiny sample size, something like 0.1 mL of tank water, which can lead to huge errors. I use the red sea calcium test. The color change is pretty easy to detect and and I like the single hand shaker titrator