There are several threads accumulating on the forums of people having issues w/new marine magnesium checker HI783. There are also some similar reports on the AskBRS facebook page--results several hundred points higher. I wanted to start a thread here in Hanna Instruments sub-forum to give Hanna a chance to see the reports of similar issues and address. I personally am despite about a dozen repeated tests using both factory instructions and varied testing procedures to ensure accuracy.
If you are having/have had issues w/this new device please post here.
New Hanna Magnesium (HI783) Reviews
So Hanna emailed me back very quickly “Here are some tips the Aquariums manager put together which may be helpful. Repeatability issues are purely related to the quantity of reagent dispensed. In our experience, it just takes a little bit of practice getting used to dispensing the somewhat...
www.reef2reef.com
First impressions of Hanna Magnesium Checker HI783 (No more titration for me)
I'm, ok with high since all I'm looking for is above 1200. My tank is typically in the 1600 range anyways, and I never add mag. lol Sounds like you are best off not testing at all. lol Cheaper, easier, and you almost certainly will not get below 1200 ppm regardless of what you do. :)
www.reef2reef.com
If you are having/have had issues w/this new device please post here.