Review on 🐠 SunGrow Refractometer for Aquarium Salinity Measurement - Highly Accurate, Calibration Tool Included, Promotes Optimal Plant and Marine Life Health, User-Friendly and Readability Enhanced by Kelly Thompson

New to marine aquariums so I found I would need something similar to measure the amount of salt in the water. For the price I went ahead and bought it. After watching a few videos, it was easy to learn how to use and has had consistent results. Essential for saltwater pools where this is a major problem. Feels solid and not cheap. I expect this to continue for years.