Question about Hanna magnesium checker

[Robert Ranciato]

Anyone no why Hanna doesn't make a magnesium tester for reef aquariums? I no they make one but I have never seen anyone using it on there reef tank. I hate the other mag test kits. Thanks

 

[Doctorgori]

Huh? They make one? ...following and heading to BRS to look that up

 

[highest_tides]

Anyone no why Hanna doesn't make a magnesium tester for reef aquariums? I no they make one but I have never seen anyone using it on there reef tank. I hate the other mag test kits. Thanks

I believe I have seen that tester on the hanna website but the specs say thr range is only up to 20 ppm

 

[Placenta89]

Anyone no why Hanna doesn't make a magnesium tester for reef aquariums? I no they make one but I have never seen anyone using it on there reef tank. I hate the other mag test kits. Thanks

Hey, dumb question but I saw magnesium hardness test with Hanna but I wasn't sure if it was the same thing as just magnesium readings.

If you ended up getting it at all please let me know how it worked for you. Thanks

 

[Iant419]

Hey, dumb question but I saw magnesium hardness test with Hanna but I wasn't sure if it was the same thing as just magnesium readings.

If you ended up getting it at all please let me know how it worked for you. Thanks

I think that was for freshwater.

 

[Iant419]

Anyone no why Hanna doesn't make a magnesium tester for reef aquariums? I no they make one but I have never seen anyone using it on there reef tank. I hate the other mag test kits. Thanks

I've seen a magnesium hardness tester for freshwater (black) and a manganese tester (red). Is that what you were thinking of?

 

[Randy Holmes-Farley Verified Community Expert]

Hanna checker madness

No matter what y'all think this is, it isn't rocket science. It's a tester that's going to give you a reasonable proximity of the values in your tank. It's not precise, its close. Precise equipment would cost hundreds of $'s. It's hobby grade equipment that's susceptible to flaws. Y'all drink...

www.reef2reef.com

Robert Ranciato said:
Anyone know why Hannah doesn't make a Magnesium checker?

It is something we are looking into however the there are quite a few challenges in creating a digital test kit for MG in the existing Checker platform.

 

[Iant419]

Hanna checker madness

No matter what y'all think this is, it isn't rocket science. It's a tester that's going to give you a reasonable proximity of the values in your tank. It's not precise, its close. Precise equipment would cost hundreds of $'s. It's hobby grade equipment that's susceptible to flaws. Y'all drink...

www.reef2reef.com

It is something we are looking into however the there are quite a few challenges in creating a digital test kit for MG in the existing Checker platform.

I'll give hannah 1000$ no strings attatched if they switch from powders to droppers for everything. The nitrate reagent is so clingy I can't imagine it doesn't introduce at least a +/- 5% innaccuracy.Maybe I'm wrong but I love ph tester with the dropper.

 

[Doctorgori]

I'll give hannah 1000$ no strings attatched if they switch from powders to droppers for everything. The nitrate reagent is so clingy I can't imagine it doesn't introduce at least a +/- 5% innaccuracy.Maybe I'm wrong but I love ph tester with the dropper.

I can affirm making sure every ounce of powder leaves the packet is a pain and begs for inconsistency

 

[Dan_P]

I can affirm making sure every ounce of powder leaves the packet is a pain and begs for inconsistency

For the phosphate Checker, the amount of chemical in each packet is not identical.

I did an experiment where I purposely under and over charged the powder by 5% and obtained PO4 measurements within the promised accuracy. I assume it is the same with all Hanna Checker reagents.

For the Hanna low range nitrate vogorous and consistent shaking of the sample with reagent B, the grey one, is critically important for consistency.

 

[gbroadbridge]

I can affirm making sure every ounce of powder leaves the packet is a pain and begs for inconsistency

It actually doesn't.

There is more reagent than is required for the reaction to complete.

I think you would find that even if 10 percent of the reagent remained in the sachet, the result would still be within specification.

Graham.

 

[Doctorgori]

For the phosphate Checker, the amount of chemical in each packet is not identical.

I did an experiment where I purposely under and over charged the powder by 5% and obtained PO4 measurements within the promised accuracy. I assume it is the same with all Hanna Checker reagents.

For the Hanna low range nitrate vogorous and consistent shaking of the sample with reagent B, the grey one, is critically important for consistency.

It actually doesn't.

There is more reagent than is required for the reaction to complete.

I think you would find that even if 10 percent of the reagent remained in the sachet, the result would still be within specification.

Graham.

thank you both …appreciate the piece of mind

 

[Skibum]

good news:

Marine Magnesium Colorimeter HI783

Magnesium is a crucial element in saltwater environments, as it allows calcium and carbonate to be bioavailable for corals and other invertebrates. Therefore, consistent and accurate testing of magnesium levels in your marine aquarium is vital to ensure a healthy and thriving system. The HI783...

www.bulkreefsupply.com

 

[Hanna Instruments]

Hello from Hanna Instruments,

I am on the aquarium team, here to address the Magnesium Checker issue.

I am posting this same message on various threads regarding the Magnesium Checker so that as many people as possible get the information.

First, here is an FAQ with answers:

1) What happened?
As many of you know, Hanna Instruments prides itself in accuracy. We do extensive R&D before releasing products – what happened with the Magnesium Checker was a unique combination of unexpected factors. Our manufacturing facility is in Romania, and shipments from Eastern Europe were delayed in the Spring due to events in that area. With this, the initial batch of Magnesium products were in cargo storage for longer than anticipated. While the cargo containers sat for extended periods in the Spring, the temperature in the containers increased. This resulted in longer than usual exposure to higher than usual temperatures, which in turn caused one of the reagents to expire early. The products passed R&D inspection on site, and we’ve never had them degrade in transit before, which is why we were surprised about the issue at first. And why we are grateful that users like yourselves reported it!

2) What did Hanna do to fix the products?
The issue was one reagent expiring early during extended high-temperature exposure in the cargo containers. To fix this, we were able to greatly improve the temperature stability of this reagent by reformulating it from a liquid to a powder. This means that Reagent B is now a powder for this product. Our other Checkers have a timer built in for the dissolution of the powder reagent, so we added that to the new Magnesium Checkers too. That is the only difference in devices, but because of that, we are sending everyone who purchased the initial version a new Checker with the timer built in!

3) Why has it taken so long?
Resolving this issue took several steps. First we had to reformulate Reagent B into a powder. Then we had to add the timer into the production process for the Checkers. Once those updates were made, we had to repackage all the previously produced items with the updated ones. And of course, we had to figure out the logistics of replacing these items both for customers such as yourselves, and bulk purchasers like LFSs and major websites. We also found new transport options to avoid extended international shipping delays in the future.

4) How is Hanna going to make this right for the people who already purchased?
We will send everyone who fills out this form: HI783 Marine Checker Reagent Issue Form free replacements for whatever Magnesium items (Checker and/or Extra Reagent Packages) were purchased. Please fill out all fields!

5) How do I know if I am in queue for the replacements after submitting the above form?
I receive all the form submissions. My apologies that there is not a confirmation, but once you hit submit I do receive it. We are on track to have all current form submissions fulfilled by the end of October, and new submissions as soon as possible thereafter.

Please see our official customer letter below for more details:

These Magnesium items will be available again from your LFS and online sources soon.
Thank you for your patience as we have resolved this issue!


All the Best,
Hanna Instruments