Hanna Instruments

[idgy]

Has anyone use these for testing your saltwater? Thoughts?

Who makes a good fancy device for salinity, calcium, magnesium, alkalinity?

Thanks.

 

[NC2WA]

I have. http://www.reeffrontiers.com/forums/f72/product-review-calcium-phosphate-hanna-checkers-62478/ For Mg, Elos tends to be the most used one, but Salifert is another good one. For Salinity Milwaukee has some good auto sensor units where you add a drop of saltwater turn the unit on and bam, instant reading.