Review on 🌊 Hanna Marine Alkalinity Checker HC - HI772: Accurate & Efficient dKH Measurement by Joshua Mejia

This was my first Hanna Checker, I used Red Sea. It is easy to use and gives good results. It's impossible to guess when the color changed, especially when testing in the evening when it's darker. I place the test tubes in the checker the same way each time. Usually the gap is in the "fill to" line. Give it to me, make sure it's clean. I didn't have to use any fancy glass/lens cleaners, just a paper towel if there are visible fingerprints. then bam you get your results. No guesses.