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

These things are wonderful! I will never go back to slow sinking and counting. Those API tests that you can get from petsmart cost about the same price as this one. But I say you'll be glad you did. They're a little expensive. I buy the important ones individually every few weeks and they work great. I'm telling you they are more accurate than the API, trust me.