Thoughts on Hannah Checker for Ca

[snowmansnow]

The reviews are terrible on BRS, but then there are people who give it 5 stars and say everyone is doing it wrong.

What's the deal? Is it good ? Is it bad? is it ugly?

Thanks

B

 

[Steve Burton]

I've been satisfied with it for over 3 years. My checker still seems to be within specs when i check it with the Hanna Certified Standard sample, and plus or minus 6% is accurate enough for my taste.

Edit: I don't find it too complicated, but it does require RODI and sample water and two reagents. A little more complicated than the alk test but infinitely easier than the nitrate test, and no drop by drop procedure looking for color change.

 

[york1]

I love it. Works great for me and all my tanks are doing well

 

[sharis100]

It is a PIA to do, can’t stand it. Sorry to go against the flow, but I don’t like complicated testing.

 

[hzheng33]

I have wild swings between reading. Takes one little thing for it to be off by 100 or so.

no thanks

 

[snowmansnow]

Thanks for the feedback guys I don't think its for me. I need idiot proof (points to myself)

 

[Adam]

It isn't completely idiot proof. With a set process you can do repeated tests within the margin of error. I don't find it that hard at all. Now that the new kits come with the pipette tool the test is almost foolproof.

 

[york1]

It isn't completely idiot proof. With a set process you can do repeated tests within the margin of error. I don't find it that hard at all. Now that the new kits come with the pipette tool the test is almost foolproof.

The pipette tool is the key

 

[york1]

HI731339P Graduated Pipette

The HI731339P is a volumetric pipette designed to measure and transfer exactly 100 µL of solution to a cuvette. To obtain the highest accuracy and precision from the Hanna Instruments HI758 Calcium Checker it is necessary to add exactly 100 µL of aquarium saltwater to the cuvette. Any variation...

www.bulkreefsupply.com

 

[Adam]

9ml of RO or distilled water, 1ml of reagent A. Zero sample. 100ul of tank water with the pipette tool, add reagent B packet. Mix and get results.

The big plus is being colorblind, I don't need help.

 

[Cook]

I have also been happy with my results. Initially I had some trouble with consistency until I got better at getting all the reagent out of the packet and into the vial.